[throwaway8384j]

I'm using self checkout almost daily, in different stores with different systems. I almost never have any issues. The last time I had to call for help due to an unscannable bar code was at least 6 months ago. Staff is also available to approve purchases that has a minimum age requirement.

I don't recognize the situation that you describe, and I have been using these several times a week for a decade.

You mention paying by cash, which tells me you are probably an American (I pay by card or an app). It could be that your systems are worse, but there's nothing wrong with self checkout in general

[warrenm]

fwiw - I've only done self checkout in the US

cash or card, have a couple issues per year total (across hundreds upon hundreds of transactions)