How to change the world over the weekend

I love hackathons. I love winning them. I love competing in them. I love winning them.  I love judging them. I also love not losing them. This weekend, I am acting as a mentor to the first Health 2.0 hackathon … Continued

QR code stencil upmanship

As far as I know, I was the first person to publish a generalizable method for creating a QR code stencil or to even clearly document why such a method was difficult. However, since that time, I have realized that … Continued

Making QR code stencils

I have been on a quest to be a able to spray-paint QR codes, in mass production.  I recently demoed my QR code stencil work at Maker Faire. The secret, in short, is chicken wire and caulk. I tried the … Continued

QR code stencils, the problem

I love QR codes. I think the notion of simple graphical URLs is beautiful and elegant. If my wife were a graphical data object, I think she would be a 2D QR code. Think of it, you can put links … Continued