Firebase offers email login (passwordless) as an auth method. Where you are emailed a new URL that logs you in, each time you wish to. It also offers SMS based

Firebase offers email login (passwordless) as an auth method. Where you are emailed a new URL that logs you in, each time you wish to. It also offers SMS based login in a similar manner where no passwords are involved and you just copy a 6 digit or so number from a SMS you receive upon clicking 'Login' In India this SMS based login method without passwords is the norm for almost all locally developed apps I've used (despite SMS as the sole authentication factor being not really secure due to the possibility of sim swapping, etc). Disney Plus (Hotstar) in India has recently started mandating users to switch to such SMS based single factor auth (from password based login), presumably to add friction for account sharers.