Ask HN: How does Upromise track my credit card use?

https://news.ycombinator.com/item?id=3482273

by jasonabelli • 15 years ago

1 7 15 years ago

news.ycombinator.com

I am trying to get a start up off the ground. I need to track my members credit card use similarly to Upromise to make business plan work. I have tried to contact Upromise, Visa, MasterCard, and a new start up Linkables that tracks CCs but everyone seems pretty closed lipped about it. Does anyone have any ideas how this is done. If you are not familiar with Upromise here is their “how it works” page. http://www.upromise.com/welcome/how-it-works

mthomas3• 15 years ago

Each retailer that "supports" Upromise sends them a sha256 hash of your creditcard along with the amount for each transaction.

jasonabelli2• 15 years ago

So if made a large scale business that included small restaurants I would be relying on their "honor" to send in the sha256 to show a sale? That's not good.

mthomas3• 15 years ago

That's more or less correct. But, the customer who is tracking their percentages earned would know that their purchases were not accounted for.

dhyasama• 15 years ago

Maybe you could go further upstream? Consider integrating with POS systems, merchant account providers, or payment gateways.

jeffmould• 15 years ago

Not 100% positive, but I would think a service like Yodlee can provide you with help. It is the same service that mint.com (although I don't believe they use it anymore) and others use to aggregate your financial data into their platforms.

Ask HN: How does Upromise track my credit card use?

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