Comment by kotaKat

That was the old NCR Fastlane implementation, done wrong. They left the item security feature enabled and left the bag scales turned on. This also happened at IKEA US (which lead to them being pulled out for a long while).

A lot of retailers have dumped NCR and gone in-house for their self checkout software packages now and made it so much better. Home Depot took their custom point-of-sale and built their own self checkout frontend on top of it to allow all checkout lanes to “convert” to self checkout.

Target also did the same, dumping NCR’s software and rolling in-house software on top of the hardware to make it Not Suck.