Patent attributes
A cell phone includes at least one motion switch and circuitry to control cell phone functions when the cell phone is moved. In one embodiment, the motion switch activates keyboard backlighting. A single motion switch may be used or two motion switches may be positioned approximately orthogonally, for example, a first motion switch to activate on motion along the cell phone's length, and a second motion switch to activate on motion along the cell phone's width. One simple and inexpensive motion switch is a cantilevered spring, another is to monitor current produced by a vibrator motor already present in a cell phone. The cell phone according to the present invention with lighting activated by cell phone motion is particularly useful for locating a dropped cell phone, and even more useful for a vehicle operator searching for a dropped cell phone.
