Abstract: A system for altering an operational aspect of a mobile electronic device based on the location of the device and the proximity of the device to certain components is disclosed. The invention provides a system for altering an operational aspect of a mobile electronic device, comprising a sensor associated with the mobile electronic device and a mating element associated with the sensor. The sensor is configured to develop a unique signal based on the mating element and the proximity of the mobile electronic device to the mating element. The invention also includes logic configured to receive the signal from the sensor and alter a characteristic of the mobile electronic device based on the received sensor signal.

Abstract: A duct joining system for sealingly connecting plastic gas-conveying ducts is provided. The joining system comprises a receptacle attached to an end of a first duct and sealingly fastened thereto. The receptacle has a size and configuration which is adapted to mate with an end of a second duct. The second duct has a grippable surface extending along its length. The interior of the receptacle contains releasable gripping means and a sealing gasket. The gripping means engages with the surface of the second duct in order to urge the end of the second duct into sealing contact with the gasket.