If you’re into writing the “old-fashioned” way - that is with a pen and paper - then you’re probably already acquainted with Sharpie, the company that brought us those markers and pens that come in ...

Back in 1979, the Papermate Erasermate was introduced to the world. It was a pen with "erasable" ink, and existed mainly to scare people who wrote a lot of checks. As far as I could tell, the trick ...