No, they just need to apprehend shoplifters, call the police, and press charges against them.
A simple computer program at self-checkout could easily alert security to people stealing. It's not difficult at all. Camera shows you 12 items in your possession but only scanned 9 of them. Security is notified. Scanner shows you scanned the same $0.99 battery 12 times. Security is notified.
You're apprehended at the door. Cops called. Charges pressed. Walmart quickly earns a reputation as someplace you don't want to steal from.
kinda difficult to apprehend anyone when you don’t have anybody working the front lines...
computers aren’t the answer...