There's an open source project called 'tiqr' which uses QR, combined with a PIN code, to log you in: https://tiqr.org/
I'm using it in a project I'm working on. It's really easy to use!
There's an open source project called 'tiqr' which uses QR, combined with a PIN code, to log you in: https://tiqr.org/
I'm using it in a project I'm working on. It's really easy to use!