I don't know what any of this means, but I think we'd best not get the kids Nintendogs.
Sounds a little to close to a GPS for pedophiles to me.
according to http://www.nintendogs.com/ the range on that is 100 ft..
I don't think I would run out and panic about pedophile gps just yet.
Oh, no! Do these nintendogs bite?
The other person has to be really close, within the immediate area. When they link up, you can add the other person to your friend list. You do get their profile, and it will alert you to their birthdays and so on. You have to agree to add them, though. You cannot detect location like a GPS.
It's not just the Nintendogs game, the DS will wirelessly communicate with other DS games within a range of 100 feet or so- but bark mode will scan the area for other users in bark mode, even when the DS is closed- but the game has to be started.
First, don't put in the child's real name and birthdate.
Second... don't your kids have ~real~ dogs? Why not play with them? ;~D
Cross referencing:
http://www.freerepublic.com/focus/f-chat/1873592/posts
Sexual Predators And Communication Technology: Two-Way Radios
(GPS tracking, exploit)