Switch to wireless mice. Maybe Logitech Unifying. Then one day pull all the dongles out and put them in a bucket.
First person to figure out how to download and install the unifying software and re-pair their mouse without using it gets a bonus.
But most people nowadays are lost without mice so they’d probably cycle through all the dongles on the laptop plugged into the projector and all move their mice until they figure out which is whose.
That’s lame and easy to figure out.
Switch to wireless mice. Maybe Logitech Unifying. Then one day pull all the dongles out and put them in a bucket.
First person to figure out how to download and install the unifying software and re-pair their mouse without using it gets a bonus.
But most people nowadays are lost without mice so they’d probably cycle through all the dongles on the laptop plugged into the projector and all move their mice until they figure out which is whose.