
My father was fond of telling me, "On the internet, no one knows you're a dog." Unfortunately, dear old Dad, times have moved on a bit since the era of online anonymity; a sufficiently motivated individual can easily uncover A) you're not in fact a hound, B) what may be your most likely route for walkies, and C) so much more besides.
Two Harvard students, Caine Ardayfio and AnhPhu Nguyen, have built a project called I-XRAY (via Interesting Engineering) that demonstrates just how terrifyingly easy it is to harness available technology to dig up the personal information of any stranger you could clap eyes upon.