Like just about anything else (nuclear power?), crowdfunding can be used for good or bad.
On the not-so-good side, is the crowdfunding campaign for Reflectacles, the eyewear that may appeal to “night cyclists or privacy minded people” or bank robbers.
The glasses are said to reflect so much light as to blind closed circuit tv cameras to that your face is obscured and you can’t be recognized.
Heavy appeal to those guys that rob 7-11’s at 2AM and put innocent lives at risk.
Just can’t endorse this one.