Cell phones are the location-aware platform of choice. We should focus all our attention to improving location systems on phones (accuracy, privacy, performance, etc.). There are no other viable platforms. If it doesn't work on a cell phone, why bother?
Indoor location systems will piggyback whatever outdoor system becomes dominant. Can special-purpose indoor infrastructure ever be practical for deployment, or will location systems have to converge?
Getting a coordinate is a solved problem. No more papers need to be published on the issue. Shouldn't research now only focus on what to do with the coordinates to solve real problems?
The only people who really care about location privacy are researchers, lawyers, and bloggers. When you get right down to it, regular people just don't care that much, so let's stop worrying about it. OK?
• symmetric privacy (focusing on full disclosure with a mandatory audit trail),
• aggressive user interfaces (focusing on informing the user about leaked information), and
• helping the user (focusing on using information from an aggressive interface to suggest ways to increase the user's privacy).
• Can we achieve secure mobile computing anytime soon?
• Is security in mobile computing different from security in general computing?
• Can we build usable security and privacy functions into mobile environments?
• Will trusted computing hardware and virtual machines play a big role in secure mobile systems?
Maria R. Ebling is a research staff member at the IBM T.J. Watson Research Center, where she manages the Privacy-Enabled Context Technologies Department. She was the HotMobile 2006 program chair. Contact her at firstname.lastname@example.org.