sculptor want to switch on camera in i-phone4S
I am a kinetic sculptor with a question.
I use old phones to make kinetic sculptures. In some pieces, the sculpture microprocessor can turn on the camera. The processor is connected to a motherboard switch. There is no button on an i-phone 4S for turning on the camera, The volume 'up' button can be used for taking a picture but the phone has to be put into camera mode via the touch screen. My question is as follows. Is there an app or a motherboard modification that would allow me to use the volume 'down' button to turn the camera on in a i-Phone 4S?
I have attached a video of a piece called 'The Waifs' which shows phones in action. Many of the phones in this piece were provided by the AMTA (The Australian Mobile Telephone Association).