Abstract: A device for and method of detecting application of a force is disclosed. The device has a first layer of electrically conductive material, and a first conductor electrically coupled to the first layer. The device also has a second layer of electrically conductive material, and a second conductor electrically coupled to the second layer. An electrical power supply is connected to the first conductor, and a transmitter is connected to the second conductor. The transmitter is capable of transmitting a signal when an electric charge moves from the first layer to the second layer. Finally, a resiliently compressible third layer of non-electrically-conductive porous material is disposed between the first layer and the second layer, and separates the first layer and the second layer a sufficient distance to prevent an electric charge from moving between the first and second layers, except when one of the conductive layers receives an impact.