Raysecur says at least ten times a day someone sends a suspicious package containing powder, liquid, or some other kind of hazard. The Boston, Mass.-based startup says its desktop-sized 3D real-time scanning technology, dubbed MailSecur, can intercept and detect threats in the mailroom before they ever make it onto the office floor. Mailroom security may not seem fancy or interesting, but they’re a common gateway into a corporate environment.