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by ploxiln 3257 days ago
There's no good way. You have to use heuristics. CC companies won't help you.

https://www.candyjapan.com/behind-the-scenes/how-i-got-credi...

This is pretty much why I think credit cards are unfairly one-sided, and is a big advantage to crypto-currencies like bitcoin. CC are as easy as possible for the consumer, but it's up to the business to guess if the consumer is authorized to use it, and there's no good way to be sure. Some people are going to be unfairly shafted. Oh and credit card networks can do things like shut off access to WikiLeaks if the US government asks them to. The system mostly works for most people in western countries - but it is very flawed.