I had a job in high school at the local supermarket, the amount of people that do this, or refuse to put their hands anywhere near the scanner, is ridiculous
I had a customer once who said he didn't like using cards ( debit or credit) because they had to be scanned AND HE HAD WADS OF MONEY ON HIM. PRIME TARGET.
You are probably joking, but only UV lasers give cancer. But they are invisible, not red. A UV laser is literally a cancer gun though whatever you shine it on will become cancerous
“Whoops”