Stewart Miller (Carlsbad, CA) is a security and ERP consultant for such large corporations as EDS and IBM.  He is the author of more than 10 books, including SAP R/3 Certification, ASAP, and Peoplesoft Integration.  The certification book brought in over half a million dollars alone for McGraw-Hill.  Stewart is currently being considered as the wireless security expert at a Southern California firm with several government contracts.