Whoever builds a wearable “sparkler” that is able to disrupt digital cameras or the underlying tech in a way that doesn’t require the user to wear a large scarf or similar is going to really usher in an interesting part of history.
There are so many facets of the human body which can all be combined. Can't see your face? Who cares- I can see how far apart your eyes are, how tall you are, your shoulder-to-elbow length, your walking speed, and your approximate weight. You're dogman144, and you spend an average of $26.34 per visit.