Radio-frequency Identification (RFID)
Electronically store information on objects using electromagnetic fields so the object can be identified and tracked on RFID tags. There are two main types of RFID tags: active and passive tags. Active tags have their own power source, while passive tags borrow the energy from nearby RFID readers. A major advantage of RFID over other tag technologies is RFID tags don't need to be in the direct line of sight of the reader.
Remote keyless entry fobs emit a radio frequency with a designated, distinct digital identity code that can be used to unlock car doors.
RFID tags are in your car's EZ-Pass. When you zip through the EZ-Pass lane on a highway, the tag is read by a reader so you don't have to stop and pay at the toll.
The read time of an RFID tag is typically less than 100 milliseconds. It is even possible to read a large numbers of tags at the same time.
Facts about keyless entry and RFID.
"Without change there is no innovation, creativity, or incentive for improvement. Those who initiate change will have a better opportunity to manage the change that is inevitable."
Learn more
Creative uses for RFID tags and other similar technologies have been used
Read up on RFID or watch one of the videos below
Additional information about radio frequency and RFID tags.