When take pictures of group, we can’t control all models eyes keep open. Tessera company understand the needy of that technology and released the new FotoNation BlinkCheck technology, which improves image-taking capabilities of digital still cameras (DSCs), cell phones and other camera-enabled devices by ensuring all human subjects in a photo have their eyes open.
FotoNation BlinkCheck image enhancement technology enables a camera to capture photos of subjects only when their eyes are open. Alternatively, the technology warns a user immediately after capturing an image if it contains one or more faces with closed eyes, providing the user the opportunity to take another photo.

[ Via : Steves-digicams - Source Tessera ]