Turning a MacBook into a Touchscreen with $1 of Hardware (2018)

That is amazing. I really wouldn't have expected this to work but once you read about it.... of course it would. This is one of those things that while there maybe wasn't a 'problem' shows how knowing a few things critical, you can really solve problems / come up with solutions that nobody would have ever thought of (well I wouldn't have...).

One of the authors of this project here— We actually iterated a bit on the design since then and removed the dependencies on door hinges and paper plates. The revised^3 design involves scotch tape and a paperclip instead. https://www.youtube.com/watch?v=h6tgFeBjhVg

Hi HN! This blog post is about Project Sistine, a hack that I worked on with @antimatter15, @bijection, and @logane. We turned a MacBook into a touchscreen using only $1 of hardware (a small mirror, some pieces of a rigid paper plate, and a door hinge). We built this prototype some time ago, but we never wrote up the details of how we did it, and so we thought we should share. We're happy to answer any questions you might…