Hacker News Reader

Except I've never, ever heard of this used to solve a crime.

Reading the fine submitted article would solve that problem.

...by examining information from the front and back images of 60 pieces of mail scanned immediately before and after the tainted letters sent to Mr. Obama and Mr. Bloomberg showing return addresses near her [Ms. Richardson's] home.

Those are some powerful tools for investigators.

Reply on news.ycombinator.com