I was in a matalan and their self checkouts have the thing to remove the security tags on the self checkout. That is very trusting of them : r/CasualUK
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Could the Self-Checkout Ruin Your Reputation?
Paid for this in self-checkout without realizing it had this
What's the easiest way to identify whether newly purchased items contain embedded anti theft tags which need to be disabled if you're at a self service checkout, before leaving the store and
How to Fight Crime at the Self-Checkout Lane - Centific
Self-checkout stealing at Walmart & Kroger has its own lingo from 'the banana trick' to 'the pass around' & 'switcheroo
Since when,' I had to remove my own security tags at self-checkout
I only discovered a flaw in anti-theft measures at Target self
Don't let self-checkout walk-aways, get away! - Checkpoint Systems
I'm a lawyer - the best argument you can make if you are caught accidentally stealing from self-checkout
Don't be embarrassed at the checkout.