research on Navizon

http://www.navizon.com/

create group members -> know the location of all members

The concept


wifi/cellular towels/Gps, 3 kinds of signal can help us to locate.

GPS may not work on downtown area because of the high buildings, in other words, wifi/gsm can perform well in metropolis by the large numbers of hot spots with high density

10/3
try to use Navizon
I use the Dell X51v Pda with bluetooth GPS to locate my home.

和urmap的圖對照，因為現在google map沒有台灣的街道圖，比較難分辨相對地理位址，是因為
中原有比較大的明顯建築，才比較好分辨。
Navizon是以google map來作標記，如上圖的綠色水滴型標記。