Article about the risks of standard internet email, such as forged return addresses, and how to remove these risks using free resources. Concentrates on SMIME digital certificates, but mentions PGP.
Review from an experienced PDA user. It looks at what a PDA should try to do, and what it should not. It compares pen-based PDAs with keyboard PDAs, and then compares the Philips Nino with the Palm Pilot.