C-COIN SET (Online Instructions) by MENZI MAGIC & Zhao Xinyi

Can you imagine? You just need to very clearly put the coin in the audience's hand. Let him close his hand, then open. The coin changes color. You don't need to do anything. Then the audience can immediately check. This is C-COIN by Zhao Xinyi.

Of course with two normal coins you can do a lot of effects (exchange, prediction, which hand, and more...) it just depends on your imagination.

Less operations
Reset immediately
Multiple routines
What do you get?
One gimmick coin(C-COIN)
One normal red coin
One normal yellow coin