Dry erase markers are widely used in various environments including schools, offices, and households. They are typically applied to whiteboards, items made of glass, and specific laminated surfaces.

You've definitely used dry-erase markers to mark up a whiteboard in a classroom or at the office—they’re so ubiquitous, ...

But a dry erase marker won’t turn any heads. And this one holds its own little secret. It acts as a master key for hotel room door locks. This is really more of a repackaging hack. The exploit ...