Dr. Rosenberg has been involved with mobile computing since 1995 when he designed the first two-way email pager for AT&T.  In addition, he was the Chief Technology Officer of DataPrism, a company that produces an object-oriented application platform for authoring and deploying rich networked solutions running in web browsers on mobile devices.

Dr. Rosenberg is the founder and CEO of a Seattle technology company focused on location tracking applications for GPS enabled smartphones as well as the inventor, designer, and author of several GPS mobile applications currently available for iPhone and Android devices.