Android Proximity Sensors that provide the absolute distance rather than simply binary near|far [closed]

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http://stackoverflow.com – I'm looking for an Android device that has a proximity sensor that provides a distance measurement. The Android user guide states that some sensors provide only binary values representing near and far and this has been true for all Android phones I have tested, e.g. Samsung GS3, HTC One X. Does anyone know of a phone or tablet with a sensor that provides actual range data. Thanks (HowTos)