John Smith wrote: > 2009/12/23 Robin Paulson <[email protected]>: > >> i had an idea recently, that it might be possible to map a stream or >> small river (in an area with poor aerial photo coverage) by using a >> gps in a waterproof container attached to a flotation device >> > > I had the same thought in about June, but decided it wasn't worth > pursuing since you would have to figure out how to recover it and > that's assuming it doesn't get snagged on something or stolen. > > About the same time someone announced a GPS received + GSM transmittor > for shoes for dimentia/alzhimers patients, the would require close > proximity to a phone network, which may not be as much of an issue in > other countries as it is here. > How about a dog tracker?:
https://buy.garmin.com/shop/shop.do?cID=209&pID=8576 If the collar got stuck at least you'd be able to find it. & replacing the transmitter would be cheaper than a GPS unit if it sunk. Cheers Dave F. _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
