Invisible Pen — make any screen a touchscreen without special hardware

a teacher creating a projecting her handwritten notes by placing her phone on an elevated platform
Credits: https://www.linkedin.com/posts/dishagugnani_teachers-learning-teaching-activity-6705069147409174529-UMur
A student using a compact disc as a mirror to project their keyboard over a zoom video call
Credits: https://www.linkedin.com/posts/sarthak-agarwal-04971b68_just-wanted-to-share-with-you-it-may-help-activity-6709076668629176320-ZeJ8
another teacher writing on a mirror with a bright marker so that students can see both his face and what they are writing
Credits: https://win-vector.com/2020/11/05/new-free-mini-lecture-simpsons-paradox-in-a-b-testing/
Invisible pen setup

As we directly control the mouse, this setup can be used beyond rough sketching use cases — e.g. flip the pages of an e-book or a PDF document

Tech Stack

On-going work

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