--- ---  # Watch a Blogger Turn His Smartphone Into a 3D Hologram Projector ## Video: How To Protect Your Selfies from Hackers [Watch (HLS stream): How To Protect Your Selfies from Hackers](https://cdn.jwplayer.com/manifests/VbTXeRNE.m3u8) (1:16)  _Published 2014-09-03. A little safety can help save your skin from ending up on 4 Chan._  by [Olivia B. Waxman](https://time.com/author/olivia-b-waxman/)  ## Olivia B. Waxman Staff Writer Aug 3, 2015 8:30 PM UTC   by [Olivia B. Waxman](https://time.com/author/olivia-b-waxman/)  ## Olivia B. Waxman Staff Writer Aug 3, 2015 8:30 PM UTC A YouTube channel that dishes out technology advice [“Mrwhosetheboss”](https://www.youtube.com/watch?v=7YWTtCsvgvg&feature=youtu.be) appears to have a strategy for turning smartphones into 3D hologram projectors that involves a plastic CD cover, a glass cutter, a sheet of graph paper, some tape, and a pen. The video has racked up more than 2.3 million views in two days. [Other YouTube users have posted tutorials](https://www.youtube.com/results?search%5Fquery=smartphone+3d+hologram&search%5Fsort=video%5Fview%5Fcount) about this trick before, but this clip has just become the most popular on the video-sharing website. Inventors have even tried to [crowdsource a gadget](http://www.psfk.com/2015/03/holocube-hc-tablet-ipad-projection-3d-holograms.html) that turns iPads into hologram projectors. ### See Photos of Europe's Largest 3D Scanner  Martin Benes from 3D gang company demonstrates one of the stages of 3D scanning on August 26, 2014 in Prague, Czech Republic. The 3D scanner is the largest in continental Europe, with 115 sensors, and is designed to scan objects, people and animals. Matej Divizna—Getty Images  Martin Benes from 3D gang company is seen through the viewfinder as he demonstrates one of the stages of 3D scanning on August 26, 2014 in Prague, Czech Republic. Matej Divizna—Getty Images  Martin Benes works with a 3D model on the computer on August 26, 2014 in Prague, Czech Republic. Matej Divizna—Getty Images  Martin Benes works with a 3D model of himself on the computer on August 26, 2014 in Prague, Czech Republic. Matej Divizna—Getty Images  Martin Benes from 3D gang company holds a printed figurine of himself on August 26, 2014 in Prague, Czech Republic. Matej Divizna—Getty Images  Martin Benes from 3D gang company demonstrates one of the stages of 3D scanning on August 26, 2014 in Prague, Czech Republic. Matej Divizna—Getty Images  Printed figurines stand on display at the 3D gang company on August 26, 2014 in Prague, Czech Republic. 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