Post-it and other sticky notes that you can quickly scribble a note on are great, and that s probably why they re not obsolete yet.
Yes, you can set a reminder on your phone or tablet; it s easy to sweep those notifications away, though, and they re just not the same as a piece of yellow paper on your display or fridge.
This could all change soon enough, though, thanks to the recent showcasing of an electronic sticky note powered by solar.
Researcher Tobias Große-Puppendahl recently published a video showing off the prototype of a solar-powered sticky notice that displays a note updated over Bluetooth from something like a phone or tablet.
The display is of the e-ink sort, meaning it requires very little power and looks similar to paper.
The back of each note features a flexible solar panel, which harvests energy from ambient light.