Live demonstration: Screen piracy protection using saturation laser attack and TPVM
This live demonstration presents a new screen piracy protection technology by using “saturation laser attack” and temporal psychovisual modulation(TPVM). “Saturation laser attack” is using lasers to emit beams of colored light into the camera, so that the camera is saturated and instantly blind. TPVM is a new information display technology using the interplay of signal processing, optoelectronics and psychophysics and provides a solution for information security. Using the TPVM technique, we are able to show the disguise information on the screen while authorized viewers can truly see the secret information. An automatic target recognition algorithm is used to locate the position of the target mobile phone, then the device sends out lasers to the target phone to defeat unauthorized recording screens. By combining laser attack and TPVM, the whole system can prevent disclosure of confidential and personal information through unauthorized recording screens effectively.