Ask HN: Advice for generating and reading from a picture (similar to a qr code)

I'm trying to design something similar to a qr code from scratch. I've got some ideas on how I can anchor and fill in binary data into the graphic design but I'm a bit unsure as to how I should approach the reading/decoding part (with a camera).

Sorry if this isn't the right place to ask this.

QR codes have been around for a while. I like the way facebook messanger or snapcodes approach the task of human-friendly and machine readable designs, but I'd like to experiment with something new.

It doesn't need to encode too much information anyway.

I've been reading into AR with unity. I don't mind learning some c# but I'd ideally want to write a solution in python or javascript.

Thanks again