I need a developer and manufacturing expert

We are a start up company that in the progress of creating a product that connects with a driver's phone and prohibits access to their device. It should be 11.5" by 4" by 1.5" that looks like a sun visor in cars. The product should be able to block cell phone waves. As soon as the vehicle is turned on, the hardware embedded in the driver’s sun-visor sends a signal. These unique signals will jam the cellphone signals, blocking access to cellphone. The signal is short range, and it only covers the driver’s section of the vehicle without interrupting the passengers’ phones. The product itself is a sunvisor with a chip embedded in it. The sunvisor is hardwired to the vehicle’s ignition system. As soon as the vehicle is turned on, the chip inside the sunvisor starts sending the signal. Once the vehicle is turned off, the chip stops and the signal ceases.