Radio-frequency identification (RFID) is the use of a wireless non-contact system that uses radio-frequency electromagnetic fields to transfer data from a tag attached to an object, for the purposes of automatic identification and tracking. Some tags require no battery and are powered by the electromagnetic fields used to read them.
According to an FCC filing, the folks at Keurig (they basically make a single serving coffee machine) could be adding RFID tags to their pods in order to allow the machine to sense the type of coffee being placed into the device. This would, in turn, allow the machine to change temperature, milk type, and whatever else the coffee requires.
RFID tags are broken into three categories or types, each with its benefits and limitations:
Active RFID - Long read range, expensive, limited life battery (assists in transmission to reader), active transmitter, optional sensors.
Passive RFID - Short and medium read range, inexpensive, long life, powered by reader only, and backscatter data “transmission”.
Battery assisted passive - Similar to passive; slightly longer read range, limited life battery (microchip remains powered from battery).
Imagine: The Gap links your sweater's RFID tag with the credit card you used to buy it and recognizes you by name when you return. Grocery stores flash ads on wall-sized screens based on your spending patterns, just like in "Minority Report." Police gain a trendy method of constant, cradle-to-grave surveillance.
Walton’s first patent to mention RFID was filed in 1983, but the first patent that he got on the technology (No. 3752960) was granted in August 1973. That patent was later reference by dozens of later inventions.
RFID is expected to generate $6 billion in worldwide revenue in 2011, according to ABI Research. The chips are used in access control, car immobilization, electronic toll collection, electronic document identification, dog tags, asset management, baggage handling, cargo tracking, contactless payments and ticketing, and supply chain management.
Starting in early 2006, the U.S. Department of State will begin issuing passports with 64-kilobyte RFID (radio frequency identification) chips that will contain the name, nationality, gender, date of birth, and place of birth of the passport holder, as well as a digitized photograph of that person.
RFID is in use all around us. If you have ever chipped your pet with an ID tag, used EZPass through a toll booth, or paid for gas using SpeedPass, you've used RFID. In addition, RFID is increasingly used with biometric technologies for security.
Radio frequency identification (RFID) is a generic term that is used to describe a system that transmits the identity (in the form of a unique serial number) of an object or person wirelessly, using radio waves. It's grouped under the broad category of automatic identification technologies
Outside the realm of retail merchandise, RFID tags are tracking vehicles, airline passengers, Alzheimer's patients and pets. Soon, they may even track your preference for chunky or creamy peanut butter. Some critics say RFID technology is becoming too much a part of our lives -- that is, if we're even aware of all the parts of our lives that it affects
A typical RFID tag consists of a microchip attached to a radio antenna mounted on a substrate. The chip can store as much as 2 kilobytes of data.