How can you change a manual system in a supermarket to a computerized system?

one time i saw this wolf and he tried to eat my sister but i threw skittles at his face and said "taste the rainbow jerk" but he told me through sign language (because, duh, wolves cant talk) that my sister had his precious jem from the bulgarian country side, and that eating her was the only way to make her regurgitate it. and THEN he tried to eat me, but luckily Harry Potter came on a broom stick and wacked him in the nose wth hermione and his nose fell off so then he looked like voldemort and then mr montgomery said "oh, i ate too many cookies"