Laser-equipped wheelchair helps blind "see"

The video discusses an electric wheelchair designed for visually impaired users, which uses laser scanning to map the environment and alert users to potential hazards through vibrating touch feedback. The laser scanner creates a 3D map to identify obstacles like people or open doors, enhancing navigation and safety.

Describe the main function of the electric wheelchair developed for visually impaired users.

What are some examples of obstacles that the wheelchair can detect?