Radio frequency identification (RFID) is a technology whereby digital data encoded in RFID tags or smart labels are captured by a reader via radio waves.
RFID tags have read and write capabilities. Data stored on RFID tags can be changed, updated and locked. In most of the RFID systems, tags are attached to all items that are to be tracked.
RFID tags are fast to read and store up to 8 KB of data. Multiple tags can be read at the same time. An RFID system is made up of two parts: a tag or label and a reader. Also, the RFID tag itself has two parts: a microchip that stores and processes information, and an antenna to receive and transmit a signal.
RFID tags are either passive or active. A passive RFID tag will use the interrogator’s radio wave energy to relay its stored information back to the interrogator. An active, battery-powered RFID tag is embedded with a small battery that powers the relay of information.
RFID systems can be used in a variety of ways – here are some examples.
Amazon launched its first-ever brick-and-mortar store based on RFID technology, Amazon Go, in Seattle. Amazon Go looks, feels and smells like an ordinary grocery store, but comes with one huge difference: no more cashiers, no more lines, no more waiting.
Digital supply chains can track and trace products from manufacturers to the end user with RFID technology.