There’s no way to send feedback, or to log a fault with the machine, so the store operators have to deal with every single exception manually, over and over, instead of getting the thing fixed.

• “Place your bags in bagging area” (ok, done)
• “Unexpected item in bagging area” (How can it be unexpected, you just told me to put my bags there. Operator logs in and clears fault)
• (remove bags) “item removed from bagging area” (so you want me to put my bags there, but you don’t, but you do. Operator logs in and clears fault)
• “We couldn’t scan the last item” (yes you could, it’s on the screen there. But if I take it back and scan it again, I get “item removed” and then it won’t scan it again. Operator logs in and clears fault)
• “unexpected item in bagging area (again)”. (So I successfully scanned the thing, but you didn’t expect me to put it in the bagging area? Where should it put it instead? Operator logged in and clears fault)
• “have you forgotten to scan something?” (No, that’s my walking stick and the extra bags I brought that I didn’t actually need after all. Operator logs in and clears fault)

Does anyone actually test these things before installing them at the stores? Does anyone review the faults to see how to improve the scanning and item recognition? Are you really creating a better customer experience by having half a dozen customers holding up the line while waiting for the operator to come and clear a fault?