I was a software dev on one floor of a building working on the platform, and on the floor below us there was a fleet of about 100 of these machines that were producing the notes. Edit: There was a team of folks that maintained and operated these machines. They didn't write the software but without them the API would not have been able to function.
I really enjoyed interacting with these folks when I could. I got to build some QA UIs for them, and I took a lot of satisfaction out of using my knowledge of the platform to make a nice and efficient tool for them. You don't get to talk directly to your users often and it was a very enjoyable project for that reason.
Anyway, for a holiday party, I thought it would be cooler than a photo booth if we could find a way to make the robots draw the people that operated them. "Yeah sure, that would be cool good luck!"
Well, I actually made it work. With grit, determination, duct tape and jQuery I created a UI for generating vector path data from bitmap images so my "robot" could draw them. I hung out in a room and operated the photo booth all night and it was really fun. Nobody at work actually cared in a meaningful way but it was an extremely satisfying project for more than its aesthetic value.
https://facetrace-party.vercel.app
I've figured out multi-pen workflows to do things like maps and really cool repeating pattern geometric artwork, but the project is kind of stuck because my career has been a struggle. I have my own dedicated machine / hardware to free me from the tyranny of the cloud, but turns out the "I'm gonna build it myself" path takes longer than expected. Who would have known?
I love it so much. I can't give up on it, but it really needs more attention than I can dedicate to it. If you think this is cool and you'd like to commission some artwork please get in touch I'd really like to make this happen.