BrainwaveSkimmer

Now that we're at the dawn of the VR age with the Oculus Rift and HTC Vive all we need to do to step it up a notch is add a brain wave reader to the head apparatus. Imagine playing a horror game that sensed what you feared the most in its world and sent you more of it (for example if there was a certain kind of zombie that freaked you out the brain wave reader would detect this and send you hordes more of them). Or a soothing relaxation app that presented you with random landscapes and gradually learned the scenery you loved by reading your brain's positive reactions to what it sent you.

As brainwave reading technology matures more and more applications would open up.