google 'dead reckoning'.
The higher end nav systems and gyros, for specifically this reason.
On Tue, 19 Jul 2005, Mikael Abrahamsson wrote:
On Tue, 19 Jul 2005, Daniel Senie wrote:
I suppose a downside is folks using the Vonage boxes outside the US via VPN
will be traceable by Vonage and could get shut down, if Vonage wanted to
enforce such.
I think the ground based radio transmitters needed for indoor operation isn't
around much outside the US. I was very surprised when I got a cellphone-based
GPS navigator from AVIS last time I was in the US, and it started working
inside the terminal building.
--
Alex Rubenstein, AR97, K2AHR, [EMAIL PROTECTED], latency, Al Reuben
Net Access Corporation, 800-NET-ME-36, http://www.nac.net
