To start at the beginning, “RFID” stands for “Radio Frequency Identification.” RFID tags emit a low-power radio signal with a unique identifier. Where you might scan bar codes at the supermarket to differentiate, say, deodorant from bananas, RFID goes a couple of steps further: each individual plant or inventory item has its own unique code, whereas each banana at the store does not. Unlike bar codes, no line of sight is required to scan RFID tags. You simply need to be in proximity to the item. Although RFID provides many advantages over bar-code, it does have limitations that need to be considered.