Current verification platforms, such as Yoti, have alternative methods, but places like Discord are not using them. They seem to rely on government IDs or face scans. The face scans are very precise and for a totally blind person who might want to do this independently, it's impossible. I, myself, have tried several times. However, platforms such as Steam or Microsoft provide other methods that don't require a face scan. Such as entering a credit card number. This has worked first time for me.