Peter-Paul Koch is a mobile platform strategist, consultant, and trainer in Amsterdam, the Netherlands who has won international renown with his browser compatibility research. He frequently speaks at conferences, has founded Fronteers, the Dutch association of front-end professionals, and advises mobile and desktop browser vendors on their implementation of Web standards. On the Web he is universally known as ppk.
In 2009 he shifted from traditional desktop browsers and sites to the mobile web, and he never looked back. He discovered that mobile devices and browsers are in even more need of description than their desktop counterparts, and set himself to the task.
Currently he has about twenty mobile phones lying around on his desk. The one thing he never does with any of these phones is make a phone call.