eli5 : How do the new grocery scanners work where you just put stuff in a box do they work similar to book scanners

Question

Link to what I mean

https://youtu.be/Wz2SFCaxtcM

In: Technology

Answer 1

Typically, and this isn’t necessarily the case in that one (simply because not there to see it), is something called an RFID tag. In short an RFID tag is coded with specific information, and when put near certain transmitters will send back whatever information is on the tag. This is often used in key fobs and security tags at stores.