Al writes "Researchers at Fraunhofer Institute for Photonic Microsystems (IPMS) have developed an OLED display that doubles as a camera. The idea is to use it in lightweight heads-up displays that track users' eye movements, affording some form of gaze-control. The researchers will demonstrate a prototype at the Society for Information Display conference in San Antonio this week. The current version has a simple monochromatic display: it is 1.25 centimeters on each side, with a resolution of 320 by 240 pixels. The team at Fraunhofer IPMS has also partnered with Novaled, an OLED company that manufactures high-quality white diodes, and plans to make color prototypes using the technology."