At CES 2009 Nokia Research Center has demonstrated a prototype service Locate Sensor. As stated by representatives of Nokia Research Center, with its help, you can be sure that important things will never be lost. The operating principle of the Nokia Locate Sensor simple. For example, keys or wallet pritseplyaetsya wireless sensor. Annex at Nokia mobile phone shows the way to it and the distance. The program can track the location of 100 items. Hours shown sensors is 18 months. I have a Nokia Locate Sensor and other uses. You may have one sensor with them. It can be configured in such a way that when you delete a person more than, for example, three meters, the phone automatically switches off and included in the entry into trehmetrovuyu zone. Nokia Research Center does not report when the service will appear on a commercial basis.