Live data from Hacker News

What do Visa and Mastercard do? An intro to card networks

tautology.town

401–406 of 406 posts

Re: What do Visa and Mastercard do? An intro to card networks

#401
post #121

Earlier quoted context omitted.

You better don't look into how banks make money on your savings.

You better don't look into how banks created your savings by creating loans that were used to invest into companies and thus pay salaries.

I looked. I know. It's not me who is surprised.

Re: What do Visa and Mastercard do? An intro to card networks

#403

Earlier quoted context omitted.

This would explain why so many damn coffee shops dont deal with cash now - the double as a coffee shop and data reseller

Merchants aren't going cash only to sell your data, they're doing it because it's expensive to handle cash and makes their taxes a whole lot more troublesome too.

Well, many merchants use cash because they can dodge tax lol.

Re: What do Visa and Mastercard do? An intro to card networks

#404
post #154

Earlier quoted context omitted.

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 peo…

Is the probability that large for bank1 vs bank2? There’s only a few major banks left. Chase has so many ATMs it’s hard to compete with the access.

I live in a city with a population of ~ 25,000, and we have I think 10 bank branches, 1 credit union branch, a different credit union ATM (they closed their branch but left an ATM), and a gas station ATM. We've got Chase, BofA, Wells Fargo, the other 7 are more of local or regional banks.

Re: What do Visa and Mastercard do? An intro to card networks

#406
post #170
post #142

Earlier quoted context omitted.

It does, at least in some cases. When I book flights directly from an airline, the bank knows the name of the passenger, the date of the flight, the origin and destination airports, as well as the cabin class. For one bank (Chase), the information is printed on the statements; for another they have a web lookup tool.

Flights are one of the very few cases where this happens automatically though the card providers systems. It's called L2 data, and it's sent a little while after the transaction goes through.

Yup. I’m actually quite curious how airlines are convinced to send such information to banks whereas other kinds of stores aren’t.
Post reply on HN