Google already does this. My wife recently got a new card after hers was mangled by an overzealous cashier. She went to update the information everywhere she knew it belonged, and noticed that her Google Checkout details already had the new card information.
We spent a couple of puzzled hours wondering how in the world Google could have possibly gotten that information before concluding that it must have been a service made available to them by the issuing bank -- Navy Federal in our case -- but not having any real way to confirm it.
We'd scoured the paperwork that we did have and found nothing indicating those terms anywhere, and shockingly, this is our first indication that such a service exists.
We spent a couple of puzzled hours wondering how in the world Google could have possibly gotten that information before concluding that it must have been a service made available to them by the issuing bank -- Navy Federal in our case -- but not having any real way to confirm it.
We'd scoured the paperwork that we did have and found nothing indicating those terms anywhere, and shockingly, this is our first indication that such a service exists.
Note, I did not call the bank.