Sony patents tech that turns \u2018bananas\u2019into a PlayStation controller The patent is essentially a method that turns a \u201cnon-luminous passive object being held by a user\u201d 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 \u201cdetect a user\u2019s finger in the obtained images\u201d to coincide \u201cwith the location of the virtual button\u201d. The idea is to use any physical object, it could a coffee mug or an orange, as a video game controller.