[ttabb]

It does emit ink! It uses a modified hand-held inkjet printer (princubestore.com). The distance to the print-surface is fixed by tiny wheels which make direct contact. For some reason the article doesn't include a video of it working, if you'd like to see it in action: https://www.instagram.com/p/CwN3NFBv4sO/

source: I made the shoe :)

[h2odragon]

Thank you for the clarification; from the article it looks like a piece of costume art.

Impressive results indeed!

I'm still thinking of some way to lay down a line of "wildlife tracks" while walking. Like the illustrations in old books. This could work but it's not subtle.

I want people to look at each other and ask "when did a duck come through here?"

edit: you've advanced technology in an important way here: It's the most efficient possible arrangement for kicking the printer when it goes wrong. You should patent that. "method of minimizing latency of percussive printer maintenance"