I use my iPad for lectures. During this, it is connected to a Big Screen that the students can see. Every now and then, I forget to turn off the "auto lock" feature meaning that I have to wake it up and re-enter my passcode. Or I might want to show the students some resource on the local intranet which requires me to enter my university password.
Since the iPad keyboard works by touch and this is a somewhat imprecise method of entering data, it seems that the iPad and its apps echo the last key struck when entering a password (on the keypad for unlocking then each number "glows" as entered). This, then, reveals my password or whatever to any students who happen to be watching (usually, they're asleep by the time I have to wake up the iPad and I've learnt to wake up the iPad before waking up the students).
Before you ask, yes this did happen today. I'm pretty sure that I got my passcode in before the screen or the students woke up, but to play safe I've now changed my iPad password, all my other passwords, my date of birth, my social security number, and my mother's maiden name.
I can turn off the screen, or disconnect the iPad, but that's also a hassle and it involves me remembering that in the middle of the lecture (thinking of two things at once is never a good plan for me).
Is there any way to disable this "helpful" security "feature"?