There has been interesting innovations in printed electronics in the last couple of year. But a majority of these devices / applications have been in short term and disposable type products. More information on their reliability and accuracy over time needs to be made available.
I see two interesting possibilities. First, take a sheet of this sensor material (with embedded lenses), roll it into a cylinder, and you have a 360 degree panoramic camera! Secondly, the ubiquitous sensors could be used as motion detectors - not as external cameras looking at the human but rather as a camera attached to the human (wristband) detecting the apparent motion of the environment and thereby deducing the person's gestures.