Can RFID be used to locate items?
A radio-frequency identification (RFID) based personal locator system can help you keep track of items around your house, or find pets and even children. These systems consist of a handheld electronic tracking device and a set of coded locator tags.
How does RFID location tracking work?
Active RFID location tracking uses powered tags, which contain an internal battery. This energy source allows the tag to send out a strong, continuous signal that an RFID tracker and locator can pick up. Most RFID tags have batteries that can provide power for weeks or months before needing to be recharged.
What do RFID scanners read?
Like barcode technology, RFID Scanner recognizes locations and identification of tagged items — but instead of reading laser light reflections from printed barcode labels, it leverages low-power radio frequencies to collect and store data.
How does a reader work with a RFID tag?
As the DC voltage reaches a certain level, the device starts operating. By providing an energizing RF signal, a reader can communicate with a remotely located device that has no external power source such as a battery.
What is the location accuracy of an RFID system?
Generally speaking, most passive HF and UHF RFID systems do not provide location accuracy—they tell you that a tag has been read by a specific reader. Since you would know the location of the reader by its unique ID (say, dock door 1), you would know the tag was in the read zone of that reader (that is, the tagged item came through dock door 1).
Where does the energy from a RFID tag come from?
The tags contain electronically stored information. Passive tags collect energy from a nearby RFID reader’s interrogating radio waves. Active tags have a local power source (such as a battery) and may operate hundreds of meters from the RFID reader.
Are there any privacy concerns with RFID tags?
Since RFID tags can be attached to cash, clothing, and possessions, or implanted in animals and people, the possibility of reading personally-linked information without consent has raised serious privacy concerns.