Humor: The "must have" Apple Watch accessories, paint, clocks, even spare limbs
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Not only did Apple employees participate in assisting Cupertino in amassing these heath statistics, nearly all of them did so without actually knowing why they were doing it. This same facility tested the Apple Watch under a variety of environmental conditions as well.
The secret lab has been in operation for at least two years, and besides those funky blue masks, it may be the gene pool for all manner of accessories that prove to be less useful than others we have seen. We have the “Creepy Mask,” a new “Wall Clock,” a Game of Thrones “Night’s Watch,” even an artificial limb to keep your health statistics current.

source: The Joy of Tech and ABC News
Things that are NOT allowed: