Autonomous robot security guard has a built-in drone to stop intruders Ifeadi C. 12:04 Mashable, Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsPornhub reveals the most popular 'Avengers' searchesMake your own weed butter with the Levo I — on sale for the first time ever'You are making these crimes possible': Facebook, YouTube torn apart by UK lawmakersWhy sea creatures are fleeing their homesWatch these cats be the only protectors their garden needsDog pals take a breezy stroll in the road and end up with a police escort