Technology

In the produce section, they have scales that print out barcoded price stickers. I look up the item I'm weighing (or enter the PLU) and it gives me a sticker I can scan.

In the bakery section, where you can pick out individual muffins or donuts, they have barcodes printed on the self-service case above each item. I can just scan the barcode for whatever I take.

(I do also have the option of checking things out at the end, if I didn't scan them with the gun.)

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EDIT to Add:

Ironically, the only time I remember taking something from that store without paying for it was a time that my self-scanned order had been flagged for an audit. I was trying to buy a watermelon on sale, but the sale price didn't come up when I scanned it, so I set it aside to figure out at checkout.

When I got to checkout, my order was flagged for an audit. (Maybe even precisely because I had scanned the watermelon but then removed it from my cart when it came up at the wrong price.)

The guy running the self-checkout saw the flashing light at my register. Without comment, he came over to perform the ritual of scanning the certain number of items in my cart to reset the transaction and allow me to pay and be on my way. He and I had both been through this procedure many times. He probably performed it several times each shift he worked there.

I was distracted by the audit, however, and I forgot about the watermelon. When he scanned enough items and punched in his code, the register came up with my total and asked me how I was going to pay. I stuck in my credit card, clicked "yes" to the transaction amount, and made my way out of the store with a pilfered watermelon.