ELI5: How does a coin slot determine which coin is inserted?

Download this stock image: Slot machine at arcade containing English coins

coin receiving slot machines ; sales of all badges used by contractors and exhibitors for different classes of labor ; and all coin received by self -

coin slot aerator Because of a nationwide coin shortage brought on by business closures out of COVID-19 concerns, casinos with the coin-play machines have had

coin slot slang Players are able to earn coins through spinning a virtual slot machine in the game, attacking other villages and raiding or pillaging others