Because many handheld devices or PDAs have the ability to connect to your clients’ LANs (either 
directly or indirectly), you need to consider PDA remote access, just as you would any other remote device, such as an employee’s home computer or a company-owned notebook.
This also should include a thorough discussion of what sensitive data can be stored on a handheld device, given that the pocket-sized PDA devices are inherently vulnerable to theft.
Establish Backup Procedures
In the same context of data security, be sure to establish some kind of backup procedures. We’ve all heard the horror stories of handheld device users losing three years of appointments and 2,000 customer names that were stored on their PDA and not backed up anywhere else. Don’t let your clients become one of these statistics. Handheld Devices Client Security and Connectivity Issues