You don't even need the contactless credit card reader. ISO 15118 is the standard for plug and charge.[1] Tesla implements it, as do most other EV manufacturers. The problem is that charging networks and manufacturers haven't settled on a way to exchange and update certificates.[2]
1. https://en.wikipedia.org/wiki/ISO_15118
2. https://www.theverge.com/2024/12/4/24312002/ev-plug-and-char...