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 ...

Take a dry-erase marker and color over the permanent marker marks. Wipe the dry-erase marker off with a dry cloth and the permanent marker should come off with it. Repeat if there is any remaining ...

However, we did experience some issues with the magnets falling off ... a dry erase marker can last for several months to a year. It is important to store them properly with the cap on to prevent ...