Turn Your Smartphone into Black Light With This Simple Hack

We were pretty skeptical when we think about this hack but it turns out that this actually does work. So, we are going to show you how to do this on your cell phone and you can use this at the hotel to scan your bed or your toilet for germs or you can use it just for fun to make things glow.


What You’ll Need

  • A blue and purple marker
  • Transparent tape
  • Smartphone with LED flash
  • Highlighter
  • White paper

How to Turn Your Smartphone into a Black Light

video source: GadgetHacks


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