Ok....so someone doesn't scan it and the buzzer goes off when they leave the store. Now what? My daughter works at a retail store.....they're specifically told not to pursue or detain anyone for shop lifting. Crooks know that too. She says people will just come in and walk out with stuff.
if it reads an RFID tag for a pack the pack of socks (or bag of Doritoes) and you didn't ring it up, it simply won't let you finish the transaction.
I read an article that they can do this sort of thing already, if they think someone is stealing through self checkout, they can use their hanheld to pause the register so they have to call for help.
Edit: when you are at the register it already knows what you have. But i don't think they are quite ready to have it where it automatically scans everything for you, although the technology is there, we use it in my warehouse hundreds of times daily (except its charged to Work Orders instead of Credit Cards). when used correctly, it works great...
Edit 2:
Circle K uses cameras in their self checkouts to ring up your stuff. You just set it on the platform and it scans your items. Now, thats a gas station, so you are only talking about a handful of items, not a buggy full..