I made a project to reduce eye strain, so if you hold your phone/ipad/whatever too close to your face, it will crash your device! Fun fact: this project was made in only 34 blocks!
The title is a bit misleading, as it doesn’t instantly crash you (it takes like 5-10 seconds on a phone). Also this was tested on a iPad, a lower end device, so it might not work on higher end devices like PCs.