See in complete darkness with touch

Stuff Made Here builds an iPad case that uses the iPad's lidar and a set of motor-driven tactile pins so a blind person can feel what is in front of them. The video walks through the engineering, the tactile display and the limits the prototype ran into.

HN people admire the build as an impressive piece of assistive-tech making and cite it when discussing tactile displays and the limits of sensory resolution.

“The problem he ran into was sensory resolution vs. ability to perceive that resolution.”