The user enters her destination into the Lechal app using Google Maps or a similar navigation app. From this point on, the company claims, she no longer needs to look at her phone. The app connects via Bluetooth to a module that slides into the back of the shoe. The right or left shoe then buzzes depending on which direction the user should turn.
Krispian Lawrence and Anirudh Sharm developed the device primarily as an improvement to the walking and navigation aids currently available to the blind.