[TACIXAT]

I bet a lot of those go to rewards. Also, cards are pretty insecure. Maybe a phone with a lock on it to prevent physical theft and use, and all the data you would have associated with each transaction would make a great fraud detection system.

[driverdan]

> I bet a lot of those go to rewards.

This is the kind of thing you should know off the top of your head if you're interested in competing with them.

[TACIXAT]

Yea, that's one piece of information I haven't found. I'll have to look if it's in SEC filings for credit card companies.