Retailers in Europe, like Booths supermarkets, and the United States, like Walmart, are pulling back on having self-checkout in light of complaints and shoplifting.
You gotta time it with a heavy item. Some machines have tolerances for weight (or so it seems). So I always pick my heaviest item and put it down at the same time I put the bag down. Basically bagging it and placing it down at the same time. That “tricks” the machine into not realizing the extra weight is from a bag since the bag should be within the weight tolerance of the heavy item.
You gotta time it with a heavy item. Some machines have tolerances for weight (or so it seems). So I always pick my heaviest item and put it down at the same time I put the bag down. Basically bagging it and placing it down at the same time. That “tricks” the machine into not realizing the extra weight is from a bag since the bag should be within the weight tolerance of the heavy item.
I’ve never had it fail.