... : headphone and handset. Headphone is equipped with wireless transceiver module,micro-camera,earphone and other capture and playback devices ... through earphone. Similarly, the handset is equipped with wireless transceiver module, 2.4” TFT LCD, earphone and other ... obtain evidence wirlesslyMicro-wireless Furtive snapshot combined with power lines or 3G mobile phone to do remote monitoring. Application ...