What does RFID mean on a backpack?

Excuse me, could you clarify what RFID stands for in the context of a backpack? Is it some sort of technology that's being incorporated into backpack designs these days? If so, what specific functions or benefits does it offer for those who choose to carry RFID-enabled backpacks? I'm curious to know more about this emerging trend in the backpack industry and how it might be impacting consumers.