Sony patents tech that turns ‘bananas’into a PlayStation controller The patent is essentially a method that turns a “non-luminous passive object being held by a user” into a controller, superimposing virtual buttons on top of it, with a banana being described as the example. A camera could detect the objects so they could be used as controllers, or a camera could “detect a user’s finger in the obtained images” to coincide “with the location of the virtual button”. The idea is to use any physical object, it could a coffee mug or an orange, as a video game controller.