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).<p>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 have about the project!