#2) You can attach multiple tokens to a card. If you want to go through with it I supposed you could attach it to your friends phone... or just give them your card because you will still have that.
#4) You call your bank and they don't allow that token to be used anymore, pretty simple really.
You don't even have to change cards because all they got was the token, which can only be used where you authorized it, once. So if someone gets the token it's pretty useless.
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#2) You can attach multiple tokens to a card. If you want to go through with it I supposed you could attach it to your friends phone... or just give them your card because you will still have that.
#4) You call your bank and they don't allow that token to be used anymore, pretty simple really.
You don't even have to change cards because all they got was the token, which can only be used where you authorized it, once. So if someone gets the token it's pretty useless.