British student presented Theia — handheld navigation device for the blind and visually impaired. It is based on managing the power gyro (hiroden), which guides the user through the stabilisation of their situation, as well as the lidar and camera that provide navigation and help to pass obstacles. The device still exists in the form of a prototype, its commercial implementation is not known. On the development can be read on the website of Loughborough University.
One of the traditional and the most common navigation solutions for the blind and visually impaired — guide dog. These dogs (mostly used for this purpose Labradors) are taught to navigate the terrain and to inform the owner about possible obstacles in his way, and, for example, to go for help in case of an accident.
Despite their effectiveness in navigation, from guide dogs has its limitations: for example, they may not be suitable for people with allergies, small homes, or simply those who are not able to care for the animals. As a replacement for engineers offer a variety of solutions: for example, Microsoft for several years developing a navigation system that is integrated in a white cane (as well as the company has released a similar app Navigator for mobile phone).
Another device was presented by the Briton Anthony Camus (Anthony Camu) — he finishes the program of Industrial design and technology at Loughborough University. Inside Theia — giradin which controls the movements of the user, and a vibration motor that delivers an additional signal: when the user needs to rotate the device is tilted in the right direction. Because of this Camus calls his device a “dog” in the form of gadget.
For orientation in space Theia uses cameras and lidars, and is controlled by voice commands: the user needs to call the right address, after which he will be the most efficient route (for this, apparently, need to connect to a mobile phone). So far, the device is presented only in the form of a prototype has some limitations, in particular — excessive vibration during navigation. Also, it’s unclear whether there is a device on the market.
Another option is navigation for the blind and visually impaired proposed by the Dutch company Envision: they are equipped with Google Glass, a computer vision system and voice assistant.