What about using LBS (works like terrestrial GPS) to locate the phone and update a web page? This could be an add-on from the wireless carriers, akin to handset protection.
http://www.wirelessweek.com/article/...edesc=Features
This of course assumes that security and privacy issues are hashed out in advance....
By using LBS + IMEI (SIM-independent) to post location data periodically, a couple of services could be offered by the provider through this mechanism (assuming no patent infringement with existing 3rd-party services that currently overlap this space):
- Find my phone (both theft prevention as well as lost device -- possibly combine with SIM monitoring described above).
- E911 (LBS interface exists today -- I propose that E911 should shift to use the same infrastructure and interface)
- Where is my kid?
- Vehicle (and fleet management) / Container / Asset tracking
- Simplify mobile ATM logistics
- Remote surveillance
- Simplify service and maintenance logistics where physical location may change