The alternatives to passwords are fine as long as they work. I made the mistake of only registering one fingerprint to access my smartphone and had no end of trouble when the phone suddenly decided that my fingerprint didn't match up. (I eventually gained access, allowing me to delete the dodgy fingerprint and then register four new ones).
>>> My very high security work is changing from having to change passwords every 4 weeks . . .
That's possibly not quite as secure as the password system used by rail staff to access the software which shows the locations and delays of every train in the country. After firstly entering the location code of the user and the fixed password that goes with it, there's then a second password needed, which changes every six minutes!