Can't speak to the TSA system, but the self-checkout at the grocer is a piss-poor implementation... Most shops have a scale on the bagging side, but it's far t

Can't speak to the TSA system, but the self-checkout at the grocer is a piss-poor implementation... Most shops have a scale on the bagging side, but it's far too small a platform for more than 2-3 bags worth of food. Most Americans shop for a week at a time. So, they can't reliably check-out themselves because the system complains if the scale reading doesn't match the expected weight of scanned items. But, at the same time, grocery stores slashed manned check-out lines, forcing people to use the self-checks when they had unsuitably large carts. So you either wait in a long manual line, or you wait in a short (bot slow and error prone) automated line. Lose-lose for consumers.