alt Hacker News> Another thing to consider is your credit card rewards cash back etc are really trading your privacy for a little rounding error worth of discount in comparison to using cash.
How much privacy really? If I get mostly $20s from the ATM, and the merchant does daily deposits of most of the $20s they get, why wouldn't banks start scanning and tracking serial numbers (if they don't already), if my purchasing habits are actually valuable?
Replies
asdff • today at 7:47 PM
Make change with your local under the table taco stand
ButlerianJihad • today at 7:40 PM
> The site was officially launched on December 23, 1998.
In a theoretical sense, you are right.
The life of most currency notes is bank to customer to merchant to bank, and the bank could just track serial numbers to figure out your spending habits.
Practically, it would make little sense. The actual life of most currency notes is bank1 to customer to merchant to bank2, and there is a large probability that bank1 and bank2 are different entities. And then, so many more people use the credit card system, and it is so much easier to track people there, that the ROI on tracking people using cash would be low.
I would be very surprised if any bank tried to scan currency note serial numbers.