Regarding the portrait used in many of the example QR codes: For some reason, the portrait of Peter Weinberger has always been our most popular target for

Regarding the portrait used in many of the example QR codes: For some reason, the portrait of Peter Weinberger has always been our most popular target for picture editing experiments. [1] [1]: http://swtch.com/pjw http://swtch.com/pjw