I think you remember the robot very well that served you in the hotel last time, created by Hitachi. Nowadays, Hitachi is experimenting with same robot to give it better eyesight that will be exposed in October.

Hitachi and few scholars of Tsukuba University have given a last touch to the Excellent Mobility and Interactive Existence as Workmate (EMIEW) robot that three-dimensional robotic vision system fitted inside the robot’s computer brain. The system navigates robot to determine the distance of object from his body and so as to avoid the obstacles in its path.

Via: therawfeed