Telepresence robots are getting more advanced all the time. They are not cheap though. The good news is you can use the Oculus kit to turn your laptop into a telepresence and security robot. You can control the robot remotely from your iOS/Android device or any PC with a web browser.
The robot supports 2-way audio and video. The frame fits most laptops and netbooks with a 10″ screen or smaller. The microcontroller is Arduino compatible.