I used a saline glitch trick in the 90s. I cannot remember the exact sequence of events, but one injected saline into the coin or bill receptacle, which made th

I used a saline glitch trick in the 90s. I cannot remember the exact sequence of events, but one injected saline into the coin or bill receptacle, which made the sensor believe money was being continuously inserted into the machine. This method had the benefit of clearing the machine of change after purchase since it registered the candy bar was bought with a substantial amount of money.