Radio Frequency Identification (RFID)

What does an RFID tag look like? microprocessor radio antenna Where’s the battery?! Photo courtesy Getty Images

Physics Review - Induction run electricity through a coil of wire an electromagnetic field is generated works the opposite way too!

RFID antenna passing through an electromagnetic radio field powers the tag! chip sends back a response using the antenna response is an ID # back to the RFID reader Photo courtesy Getty Images

Where do we see RFIDs?

Supply chain usage of RFID efficiently count and track goods! http://msdn.microsoft.com/en-us/library/ms954628.aspx

Other RFID uses authentication student attendance tracking proximity access cards passports student attendance tracking any wireless tagging