> Enforcing the use of the built-in scanner BJ's Warehouse Club self checkouts used to weigh your purchase, but also had infrared sensors to ensure it went on

> Enforcing the use of the built-in scanner BJ's Warehouse Club self checkouts used to weigh your purchase, but also had infrared sensors to ensure it went on the belt after scanning. The sensors could not detect anything shorter than about 3/4" of an inch (20mm), so if you bought something like an SD card it would yell at you to re-scan it. You might think you could hold it up as the belt moved but they knew how many infrared beams should be broken by it - and would yell at you. I solved the problem by not renewing my membership. The Costco self checkouts (mentioned by the author) don't have hand-scanners like they do at Sam's Club. So if you buy something heavy like a case of drinks you have to either muscle it up onto the scanner or wait for the attendant. This is something they can improve. Sam's now has an app that lets you scan and pay for your purchases through your phone. You will still get your cart looked over at the exit by an employee, but the experience has been very good. I think Walmart will be offering a branded version for their stores soon.