> Students use MST with DisplayPort to mirror a monitor in a way such that the OS cannot see that two monitors exist. (I don’t think there’s a windows API for L

> Students use MST with DisplayPort to mirror a monitor in a way such that the OS cannot see that two monitors exist. (I don’t think there’s a windows API for LDB to see this? Could be wrong) I have a cheap $50 capture card that is untraceable. My $75 HDMI mux has hdcp stripping and EDID pass through. I use these for streaming video games and this is a pretty standard set of kit. The only way to discover this is hoping that custom control commands are passed through to the monitor. OEMs use these to give you access to the OSD options from the operating system, such as a crosshair at the center of the screen for gamers, on when their game is running but off when it exits. > This would then in turn be defeated by the cheating student running a remote microphone to a quiet room which can be switched to. Honestly, most of the noise comes from the pickup. Using a simple switch to ground will still allow that hum through. You can also just loop a power cord around the mic line a few times and "actively" induce that noise. My headset makes a terrible warbling modulated at a frequency of 1/120th hz from the bad isolation in my KVM's power supply. No, a far lower tech option exists: more and more Console gaming targeted headsets like those from Steelseries include an aux in, which can easily be used for the snitch. Egg cartons for sound dampening and impromptu vocal booth and you're well on your way to defeating any technological measure.