How Smart Are Vending Machines?

This Vending Machine in Vietnam Has a Coin Slot But vending machine money slot Customer inserts coin in money slot of vending machine Duration: 00:00: Frame Rate: fps Location: NA License: Individual License Usage: vending machine slot demo Sometimes you're walking by a vending machine and you see there's something sitting there, inside the receptacle slot, and there's no owner around

vending machine money slot I have a dixe narco 368 just put onto location and the coins keep falling down to the coin return slot and not vending Why is this and how