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RFID for Beginners
Two Types of RFID Tags
There are two types of RFID tags; active tags, and passive tags. Passive tags do not have their own power supply, but rather receive their power from a tiny electrical current present in the antenna that is induced by an incoming radio frequency scan. Because of the small power present in the system, passive RFID tags are used only in short distances (such as an ID card).
Active RFID tags have a power source and therefore are much stronger and can be used over larger distances and are therefore more highly effective. Active RFID tags also have the potential to store more information than their passive counterparts. Some active RFID tags have a battery life of up to ten years.
The System of RFID
RFID works off of a system that relies on tags, tag readers, tag programming stations, sorting equipment, circulation readers, and tag inventory wands. RFID is generally used in security, because security gates are programmed to read the RFID tags and then either open or close accordingly. The system helps the information be easily transmitted via an RFID device. Systems have evolved over the years along with RFID chips. The hope is that RFID will one day be available to everyone (meaning consumers) because it will be more efficient and cost effective to implement RFID processes.
Where is RFID Used?
RFID can be found almost everywhere. RFID can be found in bookstores and CD stores. The little alarm that sounds if a CD has not been scanned is made possible by an RFID chip. RFID chips are found on animal tags, on books in libraries, in car alarms and car lock systems. RFID can also be used to detect motion. This could be very useful in the coming years in terms of prisons. In 2004 the Ohio Department of Rehabilitation and Correction (ODRH) approved a $415,000 contract to test RFID technology in prisons. The idea is that the prisoners will ware wristbands that will watch their movement. If there is any movement, which is out of the ordinary, security will be alerted. This technology will be employed in many states in the coming years.
Conclusion
RFID technology seems to have endless possibilities. Some critics of RFID technology say that it violates the privacy of citizens. This is based on the fact that RFID can be used to track whereabouts of people and obtain personal information. Putting all of this power into a little chip makes it undetectable. However, RFID can also possibly be used in driver's licenses for faster police scanners, and as a way to monitor hospital patients. With every potentially harmful application of RFID, there are several wonderful applications. It will be interesting to see all of the wonderful applications of RFID in the future.
Amie Kandowski is very interested in RFID Technology and loves writing about RFID.
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Since Microsoft released Windows for Workgroups, networking has become quite easy and very commonplace for most home computer users. Everything that is needed to set up a home network is built right into the computer's operating system which was installed in the machine. All you have to do is turn it on and set it up.
When beginning to design your home network, you will have a wide array of choices to make. Many of them have obtuse descriptions and cryptic names. However, do not let all that techno-mumbo-jumbo scare you! Try to familiarize yourself with some of the names as they are associated with the options that will affect the design as well as the value of your home network.
This is part one of home networking as you may already know gone forever are the days that computer users used to share data by means of floppy discs. Today, most computers no longer have a floppy disc drive because they are swiftly becoming obsolete.
Today, more than ever, home networks are easier and less expensive to set up. At times, however, the knowledge needed for building a network is not accompanied by any guidelines on how to secure them. In some cases, the guidelines are simply ignored. No matter what the case, that is a data disaster just waiting to happen.
When you speak of home networking, the novice is immediately thrown into a pool of cryptic acronyms and names. Fortunately, today home networks are quite easy to build.
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