Encrypting The Logon

Has anyone considered encrypting or hiding the EP logon similar to the way your PW is hidden? This would help to secure anonymity if you are on a shared computer or network. The system might show a logon to EP, but it wouldn't show your user name as it does now. Frankly, we know our logon so there's no reason to show it to us when we type it in. And yes, I do clear my history, but this would keep it more secure. Any thoughts?