Do you remember this contraption in some of the stores.
The cash would be put inside a cylinder and sent sometimes by a tube or otherwise by overhead wires to the cashier and the change and receipt would come back the same way.
The tube method must have operated by air/gas someway because it always made a 'whoosh' sound.
When we played shop we would put a tin can on a piece of string and fix it across the room and operate it by hand.
The cash would be put inside a cylinder and sent sometimes by a tube or otherwise by overhead wires to the cashier and the change and receipt would come back the same way.
The tube method must have operated by air/gas someway because it always made a 'whoosh' sound.
When we played shop we would put a tin can on a piece of string and fix it across the room and operate it by hand.