Many mobile devices are GPS enabled

....Most consumer GPS devices can be easily fit into the palm and are
not that heavy as well. It can also be clip to a pet's collar or fit
into a cell phone. The basic concept behind GPS unit is quite
simple...
http://personaltechinfo.googlepages...._dont_get_lost

<self.improvement.tips@gmail.com> wrote in message
news:1190462039.360316.238890@r29g2000hsg.googlegr oups.com...
> ...Most consumer GPS devices can be easily fit into the palm and are
> not that heavy as well. It can also be clip to a pet's collar or fit
> into a cell phone. The basic concept behind GPS unit is quite
> simple...
>

My dog has been using a TomTom1 clipped to his collar nd he loves it. It
has all his lamp posts of interest programmed in to it.