It is creepy. If the photo is totally to scale, and presuming that’s the individual’s index finger, that’s the size (more or less) of a mosquito.
Yeah, on the one hand, it’s an amazingly cool display of micro-technology, but at the same time, it’s disturbing in that something that small wouldn’t really be notice by most people at all. Especially if it runs fairly silent.
Talk about the ultimate assassination weapon! Wait until the target goes into REM sleep, then bada-bing! A little shot of cyanide or some other lethal substance ( VX would work pretty well, I’d think ).
Something like that could very well take DNA samples to
verify an identity.