The box is big enough to hold a smart phone and has an Arduino-based time lock. The real trick is making the box so that the Arduino can lock and unlock it with a solenoid. [Digitaljunky] doesn ...

Enter: the Cell Lock-Up Smartphone Prison ($17), which is here to help you carve out some media-free family time. The box, which is designed ... "You are now free to phone" or "It's time to ...

Lock them away in a box. By Molly Young Humans ... It is made of clear plastic. Embedded in the lid is a timer. You place your phone (or computer or other sinister object) inside the box, set ...