An ultrasound sensor kit could enable people with visual impairments to ride a bicycle independently.
The UltraBike unit has sensors to give the rider constant directional feedback of obstacles ahead and at each side, via vibrating buttons beneath each thumb.
The device, which is detachable and can be fitted onto the handlebars of any bike, was designed by electronics engineer and entrepreneur Paul Clark.
Oh yeah – the blind ultrasounding all over London on bikes. What could possibly go wrong?