Tacit: Wrist-mounted sonar for the visually impaired

We’ve seen a number of devices - such as the UltraCane and EYE 21 system - that combine sonar and haptic or audio feedback to let the visually impaired “see” their surroundings through the senses of touch or hearing. Tacit is a similar device that also uses sonar to measure the distance to objects and provide users with a ‘view” of their surroundings through haptic feedback. But unlike previous devices we’ve looked at, Tacit is mounted on the wrist so it doesn’t impair a user’s hearing or interfere with the use of other assistance devices such as canes.

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