主播大秀

White canes enable people who are visually impaired to scan their immediate surroundings for obstacles. Now a device created by Kenyan inventor Brian Mwenda could give them a smart boost.

The technology uses echolocation to sense obstacles further away or above knee-height. It then relays this information back to the user in the form of vibrations.

(Image: Person using a white cane, Credit: Getty Images.)