For online payments, Revolut have done something similar, I think: https://blog.revolut.com/introducing-disposable-virtual-cards/ https://blog.revolut.com/intro

For online payments, Revolut have done something similar, I think: https://blog.revolut.com/introducing-disposable-virtual-cards/ https://blog.revolut.com/introducing-disposable-virtual-card... -- I get what they're doing, it's just the stuff I'm mostly likely to get caught by is the subscription payments I don't want to have to deal with daily (domain names/netflix/spotify for instance).