Peter-Paul Koch is a mobile platform strategist, browser researcher, consultant, and trainer in Amsterdam, the Netherlands. He specialises in the mobile web, and especially mobile browser research.
He has won international renown with his Fronteers, the Dutch association of front-end professionals, and advises mobile and desktop browser vendors on their implementation of Web standards.
In 2009 he shifted from traditional desktop browsers and sites to the mobile Web. Meanwhile he has become a thought leader on the specifcally mobile aspects of these browsers: the viewport and the touch events.
On the Web he is universally known as ppk.