Hey, that was my old startup idea!

Also, I kind of wonder why this still isn't a thing; the technology for doing that cheaply has been around for at least 7 years[0], and just being able to quickly view many different outfits on yourself would be useful enough that even I (a totally fashion-oblivious guy) would consider using it.

Still, in a perfect world, such a thing would be implemented entirely locally (again, the tech required for doing that is old), with only clothes database being downloaded. This is exactly how this won't be implemented - it will instead send data to cloud for various anti-consumer, business-friendly reasons.

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[0] - https://en.wikipedia.org/wiki/Kinect

Another logical step might be skin-cancer screening (surprised that, in 300-ish comments, no one seems to have thought of this), assuming the camera's resolution and/or back-end image-processing software could be made good enough to pick out moles, etc. After all, the camera could take full-body pictures of front, back and sides very easily. Then, if anything odd shows up, you could perhaps ask the user to do a close-up shot of the affected area for further examination and/or just be told to go see a dermatologist.

While fully-naked shots would be best for this -- with all the attendant privacy/HIPPA/etc. issues -- I'd expect even doing this while in underwear/bathing suit/etc. would still be a net-win since you'd be able to examine around 90% of the body and you could do it regularly. How often, after all, do people normally get any kind of dermatological exam?

(Mind you, a dedicated device for skin-scanning might be best, but, as they say, the best camera is the one you have with you -- if this sort of device becomes popular, then it might be good to make it work for this vs. letting the perfect be the enemy of the good, as they say.)