A very tech savvy friend bought a camera in Japan and after about a week or started delving into settings. He thought all the faces looked wrong. He found a setting that made the eyes bigger and rounder. It was subtle, but quite funny at the same time.
Most of the consumer compact cameras have a "purikura" setting or a "beauty" setting with special treatment for the skin, whiter eyes and whiter teeths, and eventually bigger eyes and smaller mouth (yes, that's a thing).
It may be on by default for the cameras targeted at a female audience (in a rapidly shrinking market, female bloggers for instance are a big target), otherwise it won't even be available in more specialized or "hardcore" markets, like DSLR or mirrorless (4/3rds, Nikon 1, EOS M etc) for instance. For the anecdote, I bought a shockproof/waterproof compact camera last year and there's nothing so fancy on it.
I don't define my life based on some digital records. But law enforcement (or the executive branch of the US Federal Government, including the NSA) does. And therein lies the problem.
Someone will be convicted (perhaps even without the intervention of a court) based on unimpeachable but falsified digital records.
I can imagine someone turning the technique into a novel form of image compression, maybe for surveillance databases or something.