This Raspberry Pi project is designed to help the blind and visually-impaired to use elevators.
The wearable computer system can recognise which floor the elevator is and can tell users when they have arrived at their desired floor.
Video from the camera is analysed to retrieve the floor number and a synthetic voice gives feedback to the user.
The project has been devised by a group of students from the computer vision lab of the City College of New York. You can watch a video of the system in action.
Nick Heath is chief reporter for TechRepublic. He writes about the technology that IT decision makers need to know about, and the latest happenings in the European tech scene.