Modern security cameras are rather limited: if an incident doesn't happen within a pre-defined field of vision, a company won't know what's happening until it's too late. Secom is giving anxious offices a rare solution in what's supposedly the first airborne drone for private security. Its customized Ascending Technologies quadrotor can take to the air if there's a break-in and record what's happening, even in areas that would normally represent blind spots. The automaton can also track moving subjects with a laser sensor and knows enough to keep its distance. Japanese firms wanting Secom's robot sentry will have to wait until after April 2014, when they can rent one at about ¥5,000 ($58) per month; the investment could be worthwhile just to freak out a few would-be burglars.