What are the best sensors to be used in smart stick (cane) for blind people to avoid obstacle such as walls and holes? - Quora

How to detect if the stick has fallen in the ground from the hand of the blind person - Quora

Usability and Design Guidelines of Smart Canes for Users with Visual Impairments

What can be the other possible devices which can be designed as a substitute to walking stick for the visually challenged? - Quora

Smart Blind Stick Using Arduino With Ultrasonic Sensor and IR Sensor

What are the best sensors to be used in smart stick (cane) for blind people to avoid obstacle such as walls and holes? - Quora

Usability and Design Guidelines of Smart Canes for Users with Visual Impairments

What sensors are in a smart cane? Pt 1

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What are the sensors used for an obstacle avoidance robot? Which one is the best? - Quora

What are the sensors used for an obstacle avoidance robot? Which one is the best? - Quora

SmartCane: A Smart Walking Stick That Uses Sonar To Guide Blind People

Why do blind people use a walking stick? - Quora