i was checking simplex dot com have solution but someone said they are expensive.

so how these bitcoin exchange companies like cex . io coinbase accepting card payments?

i understand the company will do the following before accepting  card payments.

of course use a DSS PCI compliant server and then

1 - verify mobile
2 - verify id
3 - verify selfie with id holding
4 - verify selfie with card holding
5 - check for proxy/vpn
6 - send a code to card holder bank account statement to approve card before buying.
7 - give a per day limit to buy like 100 or 200 usd
8 - after all the checks if the payment is approved. wait for few min to several hours to deliver first order.

any comment?