What if a highlighter pen could also scan?

While talking to Claus about strategies for saving words on paper digitally, this idea crossed my mind as a way of indicating what on a page is interesting. It might need a bit of stabilizing or snapping, but then again, your own highlights aren’t always that precise.

A projector drone that follows its user

A fast-food restaurant with exit treadmills

A self-driving recreational vehicle

Buying Kindle books at the physical bookstore

An app that makes your phone worse as you gain weight