Measuring human-carried screens in street marketing.

Street marketing has always been judged on effort rather than effect: how many hours walked, how many streets covered. What it reached was anyone's guess.

Each iWalker, a modern incarnation of the sandwich-board man, carries an overhead screen housing a PC running VidiReports and a tiny camera, which counts the people who paid attention to the screen.

Nomadix can count the people who paid attention to its screens and deliver a convincing report to the brand.

If a screen can be measured, it can be sold properly, wherever it goes.