Samsung Made a Bitcoin Mining Rig Out of 40 Old Galaxy S5s

Samsung's new "upcycling" initiative will allow you to put a completely new operating system on your old phones to give them new life.

Samsung premiered this rig, and a bunch of other cool uses for old phones, at its recent developer's conference in San Francisco. Upcycling involves repurposing old devices instead of breaking them down for parts of reselling them. The people at Samsung's C-Lab—an engineering team dedicated to creative projects—showed off old Galaxy phones and assorted tablets stripped of Android software and repurposed into a variety of different objects.