I was trying to add a MFA key to my Bitwarden iOS app, and I could only either scan the QR code, or enter the key. The key could not be copied from the website because it was poorly made, and the QR code was on the same device that I was trying to set up the MFA on, so there was no way I could scan it. I think it would be cool to have an option to add a QR code from a screenshot.