Abstract: A system for inhibiting functions of select wireless communications devices—predominately for driver cell phones—through the use of a radio frequency transmitter synchronized with a software application that is downloaded into the cell phone or provided by the manufacturer in firmware or the operating system of the phone. The radio frequency transmitter is wired into the power supply of the vehicle and its signal is only emitted and received by the cell phone when the vehicle's power is flowing. When the cell phone receives the unique signal, the software application disables most communications and other distracting functions of the cell phone. The radio frequency transmitter also may be portable and plugged into a wall socket so that wireless communication in select rooms is inhibited when the circuit is closed.