The first time I hacked a PS3 Eye Toy to use as an eye tracker was a year ago, during my concept year here in MDP for a class call New Ecology of Things (NET) taught by Phil Van Allen. The warmup project at the time was called “Useless Networks” where I created a clever but useless helmet called “The 11th Finger“. I learned how to create this device by following the tutorials for creating the Eyewriter. Thanks to the smart people over at the Graffiti Research Lab for their detailed tutorial on their website as well as on Instructables.
To take apart the case, you need to dig in with a flat head screwdriver and pry it open while twisting