LED screen into a new cheating tool?

With the rapid development of network communication technology and modern information technology, it seems that the benefits of not only our lives, but also to try to obtain illegal benefits through cheating criminals. To make a sign, wink, or pass......

With these traditional means of cheating gradually fade out of rivers and lakes, large scale, diversification and concealment, gangs, professional high-tech cheating groups have surfaced, greatly increased the difficulty of the examination personnel to prevent and combat cheating.

The most commonly used means of stealing high tech cheating test is secret. The equipment including small size, high resolution, strong concealment wireless HD CCD mini wireless camera and miniature camera, often disguised small objects hidden in buttons, watches, pen, tie, ornaments, U disk, car keys and carry the shooting. Up to 10 minutes, the contents of the camera can be transferred to the outside of the examination room to complete the image signal stitching combination.

Digital receiving tools include LED screen, memory and receiving antenna three parts, common rulers, erasers, pens, glasses boxes, watches and other supplies may be receiving terminal. Ruler, pen, eraser and the appearance of ordinary stationery is almost the same, the LED screen can be set to display 20 to 40 Chinese characters. Transparent glasses box to receive information at the speed of 120 characters per second.

Place the receiver's screen at the bottom of the specially treated beverage bottle, which does not seem to make any difference to the regular bottle. When the cheater will drink the water in the bottle to a certain position, the use of optical principles, the remaining water can be used as an amplifier, the screen will display the information.