Yeah, that's what I was about to say. I don't think the Pokewalker was really worth either. I played with it for a day, and stopped. Though I think the game is worth $40 itself, I've always liked the Gold and Silver series.

EDIT - Oh, and you can only be able a inch or two in order to connect with each other, any further, and they won't read it.

 

I still carry my Pokewalker around with me when I go out, but other than that, I don't know what to do with it. That's what I liked most about Gold and Silver, after you are done with Johto, continue your journey in Kanto, and fight a certain somebody in the end.

 

It won't work unless you have the actual game 100% positive

 

If you buy the actual game you'd know because it's stated in the manual.
Funny how that works out, eh?

It uses IR, NOT WIFI. The DS itself does not do IR, the cart itself has an IR port.

 

Well I'm not sure but if guy check out KazoWars site(here to be exact: http://kazowar.pbworks.com/ ) if you scroll down it says that it was confirmed that soul silver rom connected to a pokewalker =S

 

1 - The pokewalker uses infrared.

2 - The DS does not have infrared.

3 - The game cartridge is a slightly different design, is black instead of grey, and has NTR-031 on the back, whereas normal game carts are part NTR-005, indicating there's a physical/technological difference.