For designers who love to draw by hand on real paper but want to store those sketches in the cloud, there is now a kind of a refined, tech-savvy etch-o-sketch in the form of the Rocketbook Wave Smart Notebook from self-described "notebook innovators" Joe Lemay and Jake Epstein. 

Using a special pen known as a Pilot FriXon, one can write or draw in the notebook by hand, and then choose a symbol at the bottom of the page that is linked to a particular app in the cloud. The information on the physical sheet is uploaded to the cloud by taking a picture of it with one's phone, but the ink in which it is written turns invisible once it is microwaved, making it unneccessary to own more than one notebook (presuming, of course, that access to the information on the cloud remains unobstructed). 

Mr. Lemay and Mr. Epstein were motivated to attempt to reinvent the notebook partly because they were tired of the stagnancy in the spiral-bound market. The product, which officially dropped on June 9th, has attracted a slew of mixed reviews on Amazon, with some users attesting to how much they've enjoyed microwaving their notebooks, and others complaining that it's far more hassle than it's worth. Verified purchase Amazon customer Sherry Oppenheim notes in her product review that "I thought that when I purchased this item, there was a direct link on the smart phone to my email. It actually requires a photo to be taken of the pages and then sent to the email. I could do this with ANY piece of paper and then send the image to my phone through texting, email, or Drop Box. I had cut open the packaging, so I could not send it back for a refund." The inventors say they welcome customer feedback so they can continue to refine their product.