It's fascinating how this is literally out of science fiction. The short story "WHILE-U-WAIT" by Edward Wellen (from 1978) describes a world where offering thi

It's fascinating how this is literally out of science fiction. The short story "WHILE-U-WAIT" by Edward Wellen (from 1978) describes a world where offering this kind of detective work service is made possible by technological data collection and filtering advances. When I first read the story sometime in mid 90's it still felt too far off, but over the past 5 years it has become not only reality, but apparently also a competitive sport for would-be forensics hobbyists.