I used my new BT-339/iGuidance yesterday. As I was walking back to work from South Street Seaport (NYC) it detected exactly where I was and even how fast I was walking. Way cool.
Later, while biking home, I stopped at the Unisphere (that big globe in Men In Black - see
http://www.bigwaste.com/photos/ny/unisphere/). I was just about where the kids in the right on the photo are when I turned on iGuidance. Then I biked towards home with the Axim in one had, watching as iGuidance showed my course. Again, lots of fun. But I'll need a handlebar mount if I'm going to take it anywhere seriously.
Now, what blocks it? I can anwer that it doesn't work when inside a moving elevated train. I commuted by bike all week and am giving my knee a break today so I took the 7 train. I figured that I'd watch my progress on iGuidance but that wasn't working even though I held the BT-339 to the window. It also doesn't work where I'm sitting now, inside a glass and steel mausoleum.
Oh well, I'd best get back to work.