The program to be used when a person is confined in accidents.
One of the best ways to find people buried under the rubble detect electrical signals including cellular telephone signals are.
Unfortunately smartphone consume a lot of energy.
 They quickly get all the batteries at most n and then two days off will be heard.
So in Plasco events  or yurt mining accident occurs, the initial debris removal for a long time, the battery will be completed.
It will not be possible to track via phone signals.
The consumer battery and then connect the phone to the SIM card and the display module is Wi-Fi.