Robert Kao is one well-rounded professional. His ability to translate his technical knowledge and communicate with users of all types led him to co-write BlackBerry For Dummies and BlackBerry Pearl For Dummies. He started out as a BlackBerry developer for various financial firms in New York City, that truly global city. A graduate of Columbia University, with a Computer Engineering degree, he currently lives in South Brunswick, New Jersey.

Dante Sarigumba is a long-time user of BlackBerry and a gizmo enthusiast. He is a co-host of the Mobile Computing Authority biweekly podcast. He works for a major investment bank in New York as a software developer and lives in South Brunswick, New Jersey, with his wife, Rosemarie, and two sons, Dean and Drew.