I have been using something like this for years (a French service from my banking group called Virtualis). I have no idea why it's not more frequent. The main

I have been using something like this for years (a French service from my banking group called Virtualis). I have no idea why it's not more frequent. The main thing to be careful about is not to use this to pay for things where you will be required to provide physical proof of card ownership later. For instance, some French railroad tickets can be withdrawn from machines where you must insert the card that has been used to purchase them.