Parkinsons Laser Attachment for Walker

I made this device for my dad's walker - he suffers from Parkinson's disease. People that have this some times "freeze" and have to count to get themselves to move again. The idea is that the device shines a laser line on the ground where the person walks through. For some reason they focus on the light and freeze less. The upgrade to a walker is really expensive so i bought a laser level from Amazon and pulled the parts off to repurpose. (Link below) The laser component is really just a pointer