While everybody is expanding their capability up to 20-Megapixel right now (for DSLR camera), guys in UJI (Universitat Jaume I) Optics Resear Group (GROC) in Spain has going in the reverse direction by going down to the 1 pixel sensor state while maintaining the capability of recording high quality images.
With this 1 pixel sensor camera, the GROC team has successfully snaps 2D pictures in quality. The proof is the above image. They’ve capture their UJI logo and the result is pretty good. Later in the development, this 1 pixel sensor camera will be used in health sector, such as to investigate and capture internal biological tissues.