Abstract: A system to identify a non-approved mobile device includes a scanner for mobile devices. The scanner may be deployed in a vehicle or in a building to detect the location of non-approved mobile devices therein. The scanner may receive RF transmissions from mobile devices located within the range of the scanner. Such mobile devices may be located within, outside, or proximal to the vehicle or building. Based on unique identifying signals, the scanner may classify the devices as approved, non-approved, or transient. The scanner may be in data communication with data storage capacities located within the scanner or accessible through wireless communication. Approved mobile devices may scan for transmissions within their environment and relay information to the scanner.

Abstract: A method for determining the location of a mobile device in a vehicle may include the transmission by one or more speakers of the vehicle of a sound signal having predetermined characteristics. The mobile device may include the capability to recognize the sound signal based on methods to identify a sound signal having the predetermined characteristics. In some aspects, the mobile device may incorporate software having a specific filter that is matched to the characteristics of the sound signal transmitted by the speakers. The mobile device may also include software configured to disambiguate effects of multi-path scattering, reflection, and attenuation of the signal through the vehicle cabin. The vehicle may include software to generate the sound signal and to adjust the sound signal characteristics for position-dependent signal fading, frequency dependent signal fading, and high amplitude audio interference.