The sensors of the future will certainly not be silicon. But biological. Your eye paired with the brain, could become the best camera you have someday.
I have had one of these for years, it fits under my cap and feeds to a pair of 3D glasses and stores images on an 8 terra byte hard drive in my left ear.
It has a clip on filter tuned to shoot through clothing but additional sensors detect if the subject is male or female, thus avoiding convultions.
Please visit my site www.sleezycam.com for images (updated every 10 min)