For a while, I programmed while walking on a mini-laptop. Nice walking paths where I lived. I was on a hobby project and wanted to spend any minute on it. It wasn't pretty. I kept trying to design a contraption I could wear on my shoulders that worked like a laptop desk.

I also attached a laptop to a treadmill at home, but the static electricity from the rubber mat kept zapping the laptop.

The best result was a laptop on an exercise bike. But the bike couldn't have a high resistance or I would lose concentration.

In my city, if the area is so crowded I can pick a stranger to follow to the common destination or if it's so empty that I don't have to worry about walking into someone, I can confidently read even the most engrossing novel on my phone. I won't dare doing that with any bigger screen because I won't be able to see the upcoming obstacle.

Read while walking, I live in a walkable city. The pedestrian way is safe. I stop reading when I arrive at any intersection then start again once I cross. Even as a kid, I'd rush to open any magazine I bought before I got back home and would read them while walking.

Reading while walking is possible. I used to do this. But with physical books