Jackpen turns your smartphone into a ballpoint pen

We've all experienced an “oh crap” moment when we need a pen and there isn't one to be found. I have a handy solution for you – if you carry a smartphone. It's the Jackpen. A tiny ballpoint ink pen that stores in the earphone jack of your phone. When you need a pen, you remove it, flip it over, plug it back into the jack and presto, you have a pen. Writing with your smartphone might be a bit awkward, but I didn't say it was a perfect solution, just a handy one Jackpens come in packs of 3.

The Gadgeteer , Jackpen turns your smartphone into a ballpoint pen, Jackpen turns your smartphone into a ballpoint pen