TechEd Follow up, further reading on device security...
Marcus Perryman's blog has a great article on Windows Mobile 5.0 Role security
http://blogs.msdn.com/marcpe/archive/2006/10/24/windows-mobile-5-0-role-security.aspx
Security for Windows Mobile devices
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/mobilesdk5/html/wce51conSecurityRoles.asp
and of course you can find my session on the postshow DVD.
Thanks