Seeing as how the whole E-Ink revolution is doing quite well, it’s time the technology took a new turn. The Sharpie Company has designed a rather redundant but let’s face it a slightly innovative concept, the Liquid Pencil. It allows you to write stuff down that can be erased within a period of three days after which it stays permanent. The ink is made from liquid graphite. I’m really not sure how helpful this is, unless of course you’ve signed a contract you need to get out of. The Liquid Pencil (it just sounds weird) is due sometime in September but it seems like it’s already out there for $5 for two pens and six erasers at Office Depot. Do people still use pens?

Wired