That's really interesting. I worked in PCI (payment cards industry) and we had terminals we could relay the ISO8583 messages through, eventually opting to emulate via software for obvious reasons.
Always so cool to hear about this sort of stuff.
Always so cool to hear about this sort of stuff.
Up until a point, we were able to (easily) reproduce these messages via the ISO8583 message format via software. Makes certification much more automation-friendly.
Once we got into hardware encryption/decryption via HSM devices, it wasn't as easily done.