Someone got a coin stuck in the dollar slot of this vending machine

Why does rubbing a coin on steel make vending machines accept it? vending machine money slot COIN ACCEPTOR Multi Coin Acceptor Coin Slot for Arcade Game Mechanism Vending Machine HIGH PRECISION: Identify the true or false coin according to the vending machine coin slot coin slot 24 is a deflector 25 The deflector 25 is positioned on plates 13 and 16, which are adjacent the coin slots 24 and are located in a position

vending machine money slot Vending machine coin acceptancerejection systems Any static charge would be immediately removed when the coin touches the metal slot