[happytoexplain]

I haven't read the whole article, but it seems to be describing everything I've experienced first-hand.

My local grocery store has had them for a few years. At first they were great, but slowly things got bad. Whatever they did, the machines are now totally unreliable. They didn't monitor the weight of your groceries before, and now they do, and they complain multiple times per trip that the weight isn't right. They also require you to put all your bags in the bagging area first and hit a button to weigh them, but that fails 100% of the time if you put more than three bags in for some reason. It also randomly doesn't have the thing you scanned in its inventory (I don't know where that failure lies in the pipeline). They also just pop up other random errors.

For every single instance of the aforementioned issues, an employee must come over and override it. They seem at their wits' end.

I was told that one reason things changed is because they saw a huge jump in loss/theft.

Note that none of this has seemed to stop stores from actually investing in the things, which may be the source of confusion. But I assume they still use them because of the same reason everything is shit: They'd rather things be shit than pay people more.