Yes, that's right. But what's the problem? You're back in the same place you are already. If this putative palm print duplication technology becomes widely ava

Yes, that's right. But what's the problem? You're back in the same place you are already. If this putative palm print duplication technology becomes widely available then people will stop building technology that depends on palm prints. As has been repeatedly pointed out, the risk lies with the merchants and the issuing banks (at least in the U.S.) for credit card payments. EDIT: and, at least in the U.S. again, no-one is going to be able to force you to use this technology; there will always have to be an alternative mechanism because there are people with no hands, and a system that required them would be a massive ADA liability.