On the log in form, I want to give users the option to unmask the password field so they can see what they type. The phrase "unmask password" is too technical and its purpose may not be apparent to users. If possible, I'd like to reassure the user their password is still safe (since they may be unused to seeing it in plain text) so I was thinking when the user hovers over the button a message could display "your password will still be secure".
What is the standard terminology for showing the password in plain text? Is there standard position or appearance for a button or link to show the password?