Yeah, I remember Lotus Notes both showing multiple filler characters per keystroke and showing different keychain pictures based on the hash of what you typed. This way you could also tell you've made a typo before submitting it.

Back around 1996, Notes would show hieroglyphics that changed with each new password character.

Notes did indeed do that, and I as I recall it was three astrix characters per password character.

Yup, it was Notes, I used it at IBM. It was an unbelievably stupid idea. Every single day people were asking why their password was wrong because they were confused by the line of stars being too long.