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I remember seeing a research group that was working on creating an out of band password prompt for desktop computers at NC State. Basically the OS had a syscall
by IgorPartola 9y ago
I remember seeing a research group that was working on creating an out of band password prompt for desktop computers at NC State. Basically the OS had a syscall to pause everything the kennel included and a separate module would basically dim the screen and show the password prompt over what was currently on the screen. I forget the exact details but it was neat.
- yodon 9y agoPerhaps you're referring to Windows? (I'm not trying to be snarky, a lot of people here genuinely don't use Windows) System security related prompts have worked essentually as you describe on Windows since 2001.
- IgorPartola 9y agoI honestly don't remember which OS they used, but not this wasn't something built into any existing OS already. The point was that the code that displayed the password prompt was outside of the kernel and kernel control entirely. The UI wasn't the important part, it was that the OS never got access to the password in the first place. I imagine if you had a password prompt LED on your device that could only be lit up by the separate chip that does password prompts, that would help create an off screen UI.