How come some of these grocery stores refuse to install automated cashier machines?

I'm guess it's the amount of volume vs the cost of the very expensive devices.

Theft is pretty easy from those things so maybe that's why.If nobody's watching you can lie about things you are weighing on the scale or leave things on your cart and walk out.

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There are lots of items, quantity and measurement very difficulties.

They prob more expensive so they cadh items in themselves .

People don't like them so they mostlynstill use the teller, negating the effectiveness of expensive machinery.  And this is exacerbated by someone being needed to monitor it and help everyone use it so even though they may have four units, they check out as many items per hour as a regular machine at a much higher cost.

At the store near me, I often see a long line for the cashier even theough self serve is empty.

Because PEOPLE NEED JOBS!!!!!!!!!!!!!!!!!!!!!!!!!  Common Sense.

I wouldn't. They malfunction a lot and someone has to come over to fix it defeating the objective of self service, even if they don't malfunction someone has to come over to check your ID if you are buying restricted items. They would have to vastly improve before I would consider them.

Some customers don't like them.  One of the local stores installed them and later removed them.  I don't believe they have been reinstalled.

theft rates go up ................................

Save money and jobs.

Machines ultimately save money. But you have to put in the money for profit first.

In metro cities, they're a Godsend. But in rural areas, they value human service and less technology.