If you have an Android smartphone with
Google Latitude installed,all your movements on sea or land can be displayed on the public Spotwalla map to keep
family and friends informed of your whereabouts. Your position is uploaded every 10 minutes. You must have
internet or mobile
phone connection so it will only
work close to shore and on inland waterways/lakes.
For unlimited range,the inexpensive SPOT Messenger will do the same and more,also connecting up with SpotWalla.
Tore