This. I wish there was a fundamentally different way of handling payments. Something like a one time hash you give the vendor that serves like a digital check(cheque). This way, if they lose the hash they lost their money instead of the customer's.

Handing a merchant credit card details "feels" like handing them a blank Check and trusting them to not take more than they should because of the risk of them losing the data.

Edit: The digital hash should say where money comes from, to who, for what purpose, time, auth code and so on.

I live in Denmark, and they have a system of phone banking here called "Mobile Pay" it works kind of like that. Where you transfer money to the merchant public phone number and show them proof of sending.. However it only works for in-person payments where you can swing your phone to show.