3 ms·

I have never ever seen an online payment processor that was capable of using a card reader to perform a transaction from a webpage (on a non-specialized device)

I have never ever seen an online payment processor that was capable of using a card reader to perform a transaction from a webpage (on a non-specialized device). I don't think there is even any established standard for using a smartcard from a website. WebUSB/WebNFC may work (although browsers have blacklists of vendor IDs to disallow access to e.g. Yubikeys, so at least some smartcards may not be accessible this way), but that's all experimental and questionable stuff. It might've been possible someone had something like that in ol' good '00s with ActiveX, but that must've been surely an exception (and a security nightmare).

dahwolf 3y ago
A card reader is a stand-alone device and has nothing to do with any web tech. You put your ATM card in the device, enter your PIN code, and then the device has a tiny camera that scans the QR code on the web page. Next, you can see the transaction details on the device and confirm. It will then output a signing code which you enter on the web page. It is what was commonly used in some EU countries before we switched to mobile banking apps. Most banks still supply them for when you do very large online transactions.