Posts Tagged ‘gps’

Do You Believe That This Is A Valid Trade Off For Security Or Privacy

Sunday, June 26th, 2011

Many users need not worry about privacy risks if they know what to do. The new GPS technology makes it possible for people to find their way through unfamiliar places. It is a tool that helps people in locating a restaurant or an ATM in town. As a tracking tool, privacy issues concerning GPS use have been raised. This technology is now being integrated in most models of phones and cameras. Users like its features, from simple photo taking to sharing of information on the internet.

The focal point of the issue raised is the risk involved with anybody being able to access the user’s location from cell phone data. Basically, many phones can hold detailed records of where a person has been. Using this data with Google maps, the phone owner’s location data can be easily mapped showing everywhere he or she had been for any period of time.

Exchangeable Image File, or EXIF, is used in GPS-enabled phones or cameras to store photos. This is now generally used by almost all new models of digital cameras. Saved photos will include data regarding shutter speed, F number, exposure compensation, ISO number, date and time the picture was taken, etc. These are all information about qualities of the stored data and do not pose problems on privacy. It is the capability of cameras to store GPS information that stirs privacy concern because anybody can easily locate where the photograph was taken.

On the part of Apple and Google, they say that users have to be responsible for shielding their own privacy. Users cannot put the blame on technology just because it is made available. Users are the ones who can choose whether or not to use it. To get around privacy risks, users can switch off location tracking features in their phones. Google also said that the identification numbers of each phone signal cannot be traced to a specific handset. Google sets a policy of assigning a unique signal for each handset.

Taking this premise, some groups of users do not accept the idea of not using GPS features. They say that GPS is such a useful technology that a user can make good use of it. Also, the hottest apps are commonly location enabled. Not using this technology may put a user in a more disadvantaged situation.

What users can do is compel phone manufacturers and lawmakers to set limits on the use of GPS data. On the other hand, the government should move faster in order to catch up with the fast-changing technology. Meanwhile, users must be conscientious enough to protect one’s own privacy.

This can be done by limiting the sharing of data, particularly GPS enabled photos, online. One should take time to think considerably before uploading photos to any website, especially social networking sites. Users should be aware that most sites always ask the user whether or not he or she wants to share the information before posting. This makes one fully accountable for his or her own privacy.

It is not only cell phones that can give away your location. Every time you surf the Internet you are letting others know where you are. To surf anonymously us an anonymous proxy to mask your location.

How Do Car GPS Navigation Systems Work?

Saturday, June 11th, 2011

Contemporary auto navigation systems are really excellent. Have you ever considered acquiring one? Those who do not have or have never had a contemporary auto navigation system, or GPS (Global Positioning System) as it is also called. will almost certainly not realize quite how much knowledge they provide. It is no longer just an item to stop you from getting lost whilst you are travelling from A to B.

Far from it. Modern GPS systems will tell you when you are passing monuments, sites of historical importance or beauty, churches, hotels, restaurants, pubs, garages, petrol stations, airports and practically anything else that you want it to inform you about. They have moved on from being only an on screen map to being a tour guide and much more..

If you are thinking of getting a GPS auto navigation system, it is worth learning a bit about how they operate, so that you can better understand what they do, what they are capable of doing and how they do it. This is useful knowledge for when it comes to choosing which system to decide on, because not all GPS systems are the same and some present more features than others.

All auto GPS navigation systems use satellites to help them work out their position. (This is not always the case with boats, because some water ways use land-based tracking stations).

The GPS is like a radio receiver, so it picks up signals from overhead satellites and processes that data in order to determine where it is. In order to do this job properly, it needs the signals from three satellites.

This is called triangulation and is very accurate, frequently to within a metre or a yard. However, in order to ensure even more accuracy, the data from a fourth satellite is used as a check. There is very little scope for error if four satellites are being employed for pin-pointing a location.

A GPS device will tell you which way to go and if you go off route, it will advise you the best manner for going back to the correct road. However it will also do more than that. Before you begin out on your journey from A to B, you have to enter those two locations.

The GPS will then ask you whether you would like to go by the quickest road, the most scenic route or whether you would like to avoid motorways altogether.

This is a great role, but it can do more than that too. If you sort in the name of a restaurant along the way or a monument you would like to see, it will steer you from A to B via your place of interest.

One last point, be sure that the system that you buy is upgradeable. Some are upgraded automatically, but you have to pay a monthly or annual fee. Others will sell you an upgrade which you have to install yourself. If you are comfortable with making your own upgrades, all well and good, but just be aware that systematically upgrading the software is vital.

Owen Jones, the writer of this piece, writes on several topics, but is now concerned with how to get Stapletons tyres. If you want to know more, please go to our web site at Car Tyres For Sale.

RFID Chips: What Are They For?

Friday, April 29th, 2011

RFID (radio frequency identification) chips or tags as they are better known are as big as the smallest coin in your purse, but they can store huge amounts of data that can be used in methods that can do incredible things.

For instance, RFID tags are in the majority of office identity tags and in a few passports, enabling the holder to pass through security quickly while keeping the building or the country secure.

They are a modern version of the bar code. Remember before bar codes and bar code readers? When a shop keeper had to type prices into the cash register, correct mistakes and look up prices that they could not remember? People do not have any time for that anymore.

It is OK at the newsagents, but picture a teenager typing in your two trolleys of weekly shopping at the superstore every Saturday. You would still be there on Sunday! Supermarkets have thousands of articles and dozens of special offers – no-one could remember that lot.

No-one could, but bar codes make it straightforward and so do RFID tags. Bar codes work well, but they have to be seen to be read. RFID tags emit their data on a unique frequency which can be read out of line of sight. In other words, an RFID scanner does not have to see the tag to read it.

The scanner can see what is in your trolley without you having to unload it and as you pass by that scanner and pay for your things, they are deducted from stock straight away so that the warehouse manger can see what people are buying and what nobody wants to buy. So, if one brand of cat food is selling better than another, the manager will see that on the computer print-out and buy more of that make, thus keeping more people happy.

This use of RFID in inventory control or asset management to give it its more official title, can translate itself into other uses too. An RFID tag can be placed under your cat’s fur or in its collar so that you can find him if he gets lost. The police and the wardens scan stray animals for a tag as part of their routine these days. Zoologists have been doing this with wild elephants, big cats and other endangered species for years. Now you can have it done with your pets also.

Company vehicles, as assets of the firm, often carry RFID tags and you can have one put in your car to aid recovery if it is stolen. Baggage handlers at airports or bus terminals can (and do) use them to prevent lost luggage.

The US government insists that RFID tags be placed on all vehicles carrying ammunition or hazardous substances and have done for nearly ten years. The US military is in fact the principal user of these tags in the world. RFID tags are used to track military assets such as armaments, battle tanks, fuel, containers, artillery, you name it.

Some people are anxious about RFID technology. Where is the line between their convenience and their personal information? For instance, they do not like receiving junk emails from people that have been able to trace the purchases they made with their credit cards.

Owen Jones, the writer of this piece writes on several topics, but is now concerned with the RFID asset tracking. If you would like to know more, please go to our website at Active RFID Management.

RFID Tags And Shopping

Monday, November 15th, 2010

Radio frequency identification or RFID is an old concept that has quietly become a big part of everyone’s life. RFID has been around for at least 90 years and was initially put into practice about 70 years, but not many people knew about it. Nowadays, you yourself are most likely scanned every day by an RFID reader and the items you buy are definitely scanned at least once a week.

So what is RFID? Well, you can think of it as the update of the bar code although in fact, it is older than the bar code by 50 or 60 years. Bar codes were developed in order to integrate stock control with point of sales processing.

Everyone has witnessed this and is used to it: the sales clerk at the cash register takes the goods from your trolley one at a time, looks for the bar code, flashes a light or a bar code reader over it and the cost of the item is added to your receipt.

What you do not see is that the computerized stock records for that item are lowered by one and the sales price is noted along side it. That procedure worked well for 40 years, but now there is a need for more information to be recorded than a bar code can accommodate and there is requirement for more stock control and even more speed at the check out. Nobody has any time any longer.

Enter RFID, an old technology brought back to life. RFID is the technology that they used to put in Second World War aircraft in order to identify friendly aircraft to the RADAR-controlled anti-aircraft guns. The same equipment, fundamentally, that they still use in airplanes today to identify it to air traffic control. The difference is that until pretty recently, these radio signal emitters or transponders were the size of a suitcase and cost a lot of money.

These days they are the size of the tiniest coin in your change and cost about five cents. They win over the bar code because they can hold loads of information, like where and when and by whom an article was manufactured; how much it cost and how much it should be sold for; its colour, weight and description; which shelf and in which shop it should be kept on …. ad infinitum. The shop owner can write anything on that tag by means of an RFID printer.

And when it comes to the check out… No more reading each separate item by hand, because each RFID chip or tag, as they are called in the industry, sends out its own data on its own exclusive radio frequency, so as long as the RFID scanner is within three or four feet of the trolley, it knows what is in there instantaneously. No more unloading, scanning and refilling the trolley.

In fact, no more check out clerk. Most people pay by credit or debit card these days anyway, so as you walk past the scanner with your basket, you are scanned; you swipe your credit card through another scanner; if you are happy with it, you approve the payment and the barrier lifts for you to carry on to your car. You only need a check out clerk for the people who want to pay with cash. Cheques are being abolished soon anyway.

Owen Jones, the writer of this piece writes on quite a few topics, but is currently concerned with the RFID asset tracking. If you would like to know more, please go to our website at Active RFID Management.

How RFID Tags Can Improve A Business

Friday, October 22nd, 2010

In order to illustrate how RFID tags can really influence the fortunes of a company for the better, we shall take a look at a theoretical case below. Let us take the example of a furniture maker that specializes in the supply furniture to a hotel group.

This may sound like an example with no relevance to typical small businesses, but in fact, hotel chains are awfully choosy and have no loyalty, so if you can satisfy these people, you can please anyone.

The main requirements of the hotel chain are that orders be complete and on time, the quality of the supplier’s goods has already been determined by means of compulsory ISO 9000 quality control and factory visits.

The hotel furniture manufacturer decides to use passive RFID tags to track its items from the point of manufacture to the point of delivery, that is the hotel or its depot.

Under previous conditions the producer had employed a few people to walk around with bar code readers and clip boards carrying out quality control and tracking the fulfillment of orders.

The problem was that the arrangement was still subject to human error and items still went missing, which resulted in management compensating by over manufacturing and over stocking ‘just in case’.

That is a common enough scenario., but the difficulties are multiplied when you think of all the different articles of furniture that are involved in a hotel room, bathroom or lobby and if they are kept in a 200,000 square foot warehouse. Goods get lost, forklift drivers make mistakes, people forget to fill in inventory forms, get sick and take holidays.

In short, running a storehouse like this is a nightmare with too much pressure on important employees. It sometimes results in imperfect deliveries or worse, incomplete supply tickets. Sometimes the order might be complete but the hotel would think it was not because the delivery ticket was incorrect.

If this firm were to initiate RFID asset control they could affix an RFID tag to completed pieces of furniture. The tag would say where it is, what it is, whom it is for, when it has to be delivered and what else makes up part of the order. The tag is being read continuously by the warehouse’s RFID readers warning when orders are running late or are still short.

Not only that but the tag can disclose what else has to be manufactured and whether the item itself has passed quality control. It can also tell you which defects someone has found with it. In short, instead of a couple of people walking around the warehouse hoping that they have covered everything, you could have radio sensors analysing every tag in a warehouse the size of a soccer pitch, reporting back to a central computer where the warehouse manager can have access to real time information, not just the state of affairs at close of business the previous day.

This should enhance the manager’s opportunity to manage, cut down on waste, guarantee complete orders handed over on time and so superior levels of customer satisfaction, which should lead to more repeat orders.

Owen Jones, the author of this article writes on quite a few topics, but is now concerned with the RFID asset management. If you would like to know more, please go to our website at Active RFID Management.

categories: rfid,shopping,products,food,stock,animals,pets,technology,equipment,computer,gps,hardware,software,other

RFID Tags In General

Friday, September 24th, 2010

All RFID tags are used to store and ultimately remit data. They can best be seen of as the successor to the bar code. However, they have significant advantages over bar codes. For instance: RFID tags can hold much more data than bar codes; they can be read from further away and they can actually send data, not only store information.

There are three kinds of RFID tags: passive, active and hybrid. Passive RFID tags are the least expensive, because they are less complex. They have to be asked to disclose their information by taking power from an RFID reader. When the reader’s radio waves hit them, they echo back their information. This is the sort of tag used in goods in a retail outlet or on crates in a warehouse.

On the other hand, active RFID tags have a battery, a transmitter and an aerial so that they are always transmitting. These units are clearly a lot more expensive and so are used only on more expensive items like a container, a battle tank, an aircraft, on criminals ankle bands or on an animal of an endangered species.

The hybrid RFID tag is capable of transmitting, but it has to be told to transmit; it has to be turned on by a signal. This signal could be a satellite flying over head. These hybrid RFID tags are also costly, but the battery lasts longer because they are not ‘always on’. These tags have the same uses as the active tags, but are suitable for use where it is not vital to know where something is every minute of the day: for instance cows in a field or goats on a mountain.

Passive tags can be attached permanently by sewing them into linings or putting them under skin because they do not have their own power source and do not wear out. This is a cause of anxiety to some people who worry about an invasion of their privacy or the erosion of their human rights.

Active and hybrid tags are most frequently plainly visible so that the batteries can be changed as and when required. If this is going to be unlikely to take place, as in the case of wild animals, the tag can have a biodegradable clasp which will break sometime after the probable expiry of the battery.

Some uses for RFID tags are on season tickets so that the holder can pass through the style more quickly than a customer paying by cash. It has uses in security; most of the ID badges you see pinned to jackets have RFID built into them so that security guards do not have to stop and question everybody.

They can be put into trucks that repeatedly cross frontiers so that they do not have to stop for identification. They can be placed on windscreens so that, as you drive through a motorway toll post, either your credit card is debited or the charge is added to your company’s monthly account.

Hospitals utilize them on patients so that they do not misplace anyone or misidentify them. RFID tags are useful in our daily lives but people are concerned about criminals being able to read all this information too easily as well.

Owen Jones, the author of this piece writes on several topics, but is currently involved with the RFID asset tracking. If you would like to know more, please go to our website at Active RFID Management.

Radio And Inventory Control By The Use Of RFID

Sunday, September 5th, 2010

RFID is the recognized acronym for Radio Frequency IDentification. The basis of RFID technology is that every RFID chip or tag is capable of sending a radio signal on a frequency wholly unique to itself.

Therefore, every RFID tag must have its own identifying frequency and the RFID tag readers must be sensitive enough to be able to distinguish between frequencies that are only a very minute bit different from its neighbouring tags. The disparity can be microscopic.

Therefore, the technology has to be sensitive and selective, but not fragile, because the apparatus has to be used on the shop floor and by people who are often in a hurry and in weather that may be inclement.

In order for RFID to work, you need a tag, which is an upmarket kind of bar code and a radio receiver, often called a (tag) reader. However, whereas a bar code can only hold a small amount of information and the bar code reader has to be pointed at it, an RFID tag can store much more information and can be read from a hundred yards or more – even out of line of sight.

Passive tags will only divulge their details when asked to by a reader, whereas an active tag is constantly broadcasting its contents. Clearly, active RFID tags are more expensive than passive tags, because they have to have a long life battery.

These tags can be utilized to track goods from the moment they leave the manufacturer of the items they describe to the in-bay of the vendor. The tags can then be up-dated or renewed and stored in the warehouse. Once there, RFID readers can keep management up to date about which goods are where and if the sell-by-date is impending.

This has implications for the levels of stock that a business has to hold, the amount of items sold cheap because the sell-by-date is very near and for theft, all of which should increase company profits more than funding the cost of the tags, the readers, the printers and the programmes.

At the click of a mouse, managers will be able to read how much stock they have in real time and if this is all connected to the checkout cash registers, which are the most and least profitable items. This makes reordering simple . Easy to the point of computerization. For instance, when supplies of the top ten percent of the best selling products falls below 1,000 order 10,000 more. Automatically, no questions asked.

RFID has many other uses as well. The ideas outlined above can be applied to farm animals, a call centre’s IT hardware, a fleet of commercial vehicles, an record of domestic items, your pets, your car and even your garden furniture. Some people who work over a border are even having them put under their skin so that they do not have to wait at customs.

And do not forget that criminals on early discharge are also tagged. It is the same technology.

Owen Jones, the author of this piece writes on several topics, but is now concerned with the RFID asset management. If you would like to know more, please go to our website at Active RFID Management.

Methods Of Asset Management

Saturday, August 21st, 2010

How does one go about taking care of one’s assets – one’s worldly belongings? Well, the majority of people keep their money in a bank, put the jewellery in a strongbox and insure the remainder. But insurance is not really taking care of your possessions, is it? It is taking care of yourself so that you do not have replace them with your own money.

In the old days, and even now, I presume in some places, you would hire a boy to watch over your sheep or cattle or bring them in at night for fear of lions, wolves or rustlers. These were an early kind of security guard and indeed rich people had and frequently still do have personal body guards.

What if you had a large office with a hundred laptop computers – laptops because employees had to do field work too? How would you keep track on all those? A car is another good case in point and construction site machinery is being stolen all the time even from under the noses of (or with the help of) private security firms.

So what can you do? Get dogs? That works sometimes, but they can be poisoned. Get video cameras and passive infra-red movement sensors linked to a control centre? That works and many firms and private houses have it, but it is very expensive.

As a cheap alternative, the police were giving out free pens in the UK, which wrote in invisible ink. The idea was to write your postcode and house number. This ink became visible under a special kind of light. That is fine if you have a suspect or found property.

Bar codes are not practical, the pen is better. It all comes back to insurance or surveillance.

However, there is another way that is becoming affordable. The idea has been around for about 85 years, but it was too pricey to use on anything less significant than an airplane or a battle tank.

I am talking about radio frequency identification or RFID for short. The idea is the same one that aircraft have been using since during the Second World War – a transponder emits precoded information in answer to a demand from an RF reader.

Details concerning ownership and details of what the item is can be written to an RFID chip also called a tag and the tag can then be taped inside the object that it is to protect.

There are two varieties of tag: the passive and the active. Passive tags will only respond if information is requested by a reader, whereas an active tag is always broadcasting.

Many business people use RFID tagging to keep track of their assets. In the case of livestock, most cattle are tagged these days. Most large offices have their IT devices tagged as well and we all know that fashion stores have been tagging garments for years, although perhaps you did not know what that button was that they were taking off at the till.

People are already tagging their dogs, cats and cars and it will not be long before these asset management routines will be employed extensively at home as well. Insurance companies may insist on it.

Owen Jones, the author of this piece writes on quite a few topics, but is now concerned with the RFID asset management. If you would like to know more, please go to our website at Active RFID Management.

categories: rfid,shopping,products,food,stock,animals,pets,technology,equipment,computer,gps,hardware,software,other

Automatic Identification Systems On Boats Is Vital To Safer Boating

Monday, June 7th, 2010

Automatic Identification Systems, or AIS, are electronic transponders that are placed on ships or boats that identify it by name, position, type, & call sign. The signal is VHF that is continuously sent out over the course of the vessel’s travels.

This VHF signal is valuable because it relays information to other ships about its course and speed. As the VHF signals come in, the receivers are able to display all AIS-equipped vessels that are transmitting within a certain range. It helps to reduce the chances of collisions on the water by moving water vessels that have the systems. . The data that is received by other AIS-enabled boats is most of the time available on a computer display or positioned as an overlay on a chart plotter. This can help to substantiate radar readout.

Ship navigators utilize AISAIS as a navigational tool to reduce the risk of collision and to chart a safe course to travel. Maritime search and rescue operations can be made much easier by automated identification devices that will specify the exact location of the distressed vessel regardless time of day or the weather conditions.

It helps captains adjust their track and speed in adjusting to other vessels on the water. Ships with over 300 tons of cargo & all passenger ships are required by the International Maritime Organization to be fitted with the marine guidance system. Recreational boaters are not required by law to use the technology, but the maritime technology is increasing in demand by those users. Worldwide, 40,000 vessels are thought to be equipped with this special marine technology. The numbers are increasing everyday.

The number one use is for avoiding collisions. The tracking does not work alone. VHF radio communications can be limited and considering the fact that every vessel isn’t required to have it, it is not the perfect solution. It is not an automated collision avoidance system as defined by the International Regulations for Preventing Collisions at Sea (COLREGS). In the hands of a skilled captain however, it is one of many tools utilized for safe travel.

Sea captains often need help identifying other vessels in a local area in order to make the best decisions on course. That likewise does not mean that all additional types of navigational observation is thrown away. There is certainly, obviously, visual observation in which the captain will often use binoculars to spot far away obstacles or ships. There can also be acoustic observational alerts that a captain has to listen for such as horns, whistles, or VHF radio. Last but not least, there is radar or Automatic Radar Plotting Aid (ARPA) that can offer valuable navigational data to enhance what the AIS is plotting. Even with all this technology, mishaps can still happen. It is often due to time delays and limitations of radar or even just plain human error when this takes place. The graphical charts and all the other observational tools must be utilized if water travel is to be safe and AIS is a small part of that.

Visit Automatic Identification Systems and read more about Automatic Identification Systems on Ships

An Understanding Of Radio Frequency Identification System

Wednesday, April 28th, 2010

Radiofrequency ID system has existed ever since the 1940s and has never ceased widening its range of use. RFID is a system with numerous elements. It has semiconductor transponders, readers, and software programs that facilitates continuous data feeds.

An ınner circuit and antenna are fixed directly into all RFID transponders. The IC is actually then set in with an digital encrypt, differentiating it from among tagged items all over the world. Once the tag moves within measurement limit of an RFID reader, data from the tag is dispatched through the antenna to the sensor and to the computer for processing.

RFID system was previously applied by military application in World War 2. Since that time, it has been exploited in numerous areas. It became a really effective device in business, travel, as well as in the tracking of packages.

Though it was viewed simply as some sort of cordless bar coding gadget, RFID is much better by far. Scanning with RFID transponder stays productive even when barriers stand between the item and the detector. In addition, these types of transponders can easily scan an item as much as 90 feet.

RFID is really a stand alone identification system. This detection technique performs free of human involvement. Furthermore, it can easily read several tags at the same time while maintaining higher degree reliability in pinpointing each tagged item.

RFID devices are classified in only two groups. The very first category is derived from its storage and retrieval facility: Read-only or Read-write and Passive or Activated superpower sources. The second type depends upon the frequency it utilizes: Low Frequency, High Frequency, or Ultra-high Frequency.

Read-only labels can only attain stored information say for example product description and the like. These types of systems can certainly easily simplify fabrication and distribution systems. Read-write tags conversely are intentionally built to both interpret and input data.

In a passive method, an RFID scanner emits a power field that activates and powers the tag. Without a scanner within 90 ft, the ID couldn’t render any kind of information. A passive technique isn’t really as practical and is rather inferior with regards to trustworthiness when compared to a dynamic system.

An active system offers power packs included in tags to trigger transmittal of information between tag and scanner. These systems are more professional and are able to scan larger ranges. Newest models of these scanning devices may also come with thermal scanners.

More info about Automatic Identification Systems at RFID