I've seen the Nike bluetooth enabled MP3 player and the personal media devices. Now we need the functionality inside a cell phone.
My vision: Walk up to PC, look at My Computer, Click on your folder (its there because your Bluetooth phone is in your pocket or you have connected your phone via USB), enter your username/password and the desktop, My Documents, Favorites, Address Book... is all available. VPN onto the office network, no problem....
The problem is that you likely will have no way to install an application, so the application would have to operate as a Java program executing in a browser. Interestingly, it wgould also intelligently store selected browsed content.... spend more than a few seconds on MapQuest and the image gets stored on the phone storage, look up a phone number on Google and a vcf is added.
Security? By combining a key in the phone with the phone esn, your username, and your password strong security would be enabled. The system would allow you to log into your environment even though your home computer is off, and your work computer is in your briefcase by syncing selected, and recently accessed files on a routine basis. This would work then only if it is offered by a service provider with storage.. and with Google, Hotmail, and Yahoo all giving 2G in storage. And storage costing less than a $1 per G, this seems doable. I have big drives, but I am certain I would have a problem selecting 10G of content I would look at if I excluded all video, all music I have not listed to for 1 year.
What I really want is stuff I regularly access. Stuff I have recently been working on. And much of this type stuff could fit on the Flash in the phone anyway.