This April fools' joke has given me the idea (thank you very much!)
Two commented sections and one memset call and Kitten Secrecy was implemented.
git clone http://git.holoscopio.com/cascardo/git/v4l2capture.git/ cd v4l2capture git checkout -b kittensecrecy origin/kittensecrecy make GST_PLUGIN_PATH=. gst-launch-0.10 v4l2src ! ycbcrenc ! facetracker ! ycbcrdec ! xvimagesink
Build dependencies left as an exercise.
Screenshot is here.