This fun and simple DIY project turns your phone into a mini hologram projector. It is perfect for anyone who loves a good ...

Learn how to make a hologram using your phone! This simple DIY project creates a fun 3D effect perfect for wowing your ...

that wearable smartphone that projected a screen onto your wrist used the same technology. But there’s a need for a small projector, a pico projector, or in this case a femto projector.