Daily Tech News

PicapiCamera, developed by Casio, is the world's first iPhone app which uses visible light communication technology. To send and receive data via the app, the message to be sent is encoded using red, green and blue flashing lights and shown on the display. The receiver points their iPhone at the flashing lights and the data is transferred. "There are two approaches to communication using visible light. One is to embed data in the light from illumination sources, by turning it on and off at high speed, as a natural way of communicating information. With that approach, devices use photodiodes. The other approach involves image sensors. A device that captures light is a camera, so the idea is to relate light obtained by a camera to information. We're using the camera approach - visible light communication through image sensors." "When exchanging addresses, this system can send addresses to up to five people, rather than just one-to-one." "If yo...

Along with facial expressions, tell-tale variations in facial blood flow that causes reddening and whitening of the skin can also give an indication of people's emotions. To take advantage of this, 2AI Labs developed a special pair of glasses designed to enhance a person's color vision to better enable them to perceive the oxygenation and hemoglobin variations in another person's face, and thus their emotional state. The glasses are now finding a variety of applications, from medical to security. Evolutionary neurobiologist Mark Changizi believes that color vision in primates evolved in order for us to detect social cues, emotions and the states of our friends or enemies. When conversing with a person, blushing indicates he/she is embarrassed and if the blood drains from the face, it indicates the person is scared or apprehensive. Changizi says the human eye is specifically tuned to see blood, and the amount of oxygen in blood, right through the skin. “We can often ...