Naw, the mark of the beast has got to be in your very forehead or in your hand (Rev 14:9), not your billfold.
Details, details! Is this the mark of the first or fourth beast?
Well, this tears it! The sky is falling! We must run and tell the king!
8^)
Not trying to over think this, but couldn't a first century prophet describe a credit card held in the hand as the mark on the hand?
The mark of the beast can be in your "forehead" if you don't question evil, indulge in sinful thoughts and if you accept the world's lies instead of seeking God's Truth.
The mark of the beast can also be in your "right hand" if you accept money (as in cross my palm with silver!) that is tainted by wicked intent or sell out on your principals for cash and profit!
The Bible also says that those who have God's Mark in their Forehead will be spared.
Is the MARK figurative or literal?
Time will tell!