I made a thing called 'Living QR code'. It's a QR code that consists of live webcam video but remains scannable!
I gave a demo during the lightning talks at #Hackaday Berlin: https://www.youtube.com/watch?v=BG1bW7P5s44 (my talk starts 52’44)
Code is here: https://github.com/twisst/living_QR_code
@tjaap It is fun, centre of each QR pixel is fixed, so rest can change. Last one I saw was Rick Ashley.