12 Oct, 2015 on your phone. The marks on the cards can not be seen by contact lenses.
The sender of the camera, can be wireless, or WIFI or IP and 3G/4G. You can choose one best for you to use. Wireless, the distance short, about 100 meters. And WIFI or IP, 3G or 4G can be all over the world.
It is in the lamp. So very secret. No body will fine where is the camera, no LED in the lamp, even use phone camera
Related Keywords : marked cards, the camera, WIFI, WirelessCategories : Sports & Entertainment, Other Games