Did you use the Pokewalker?

[Shayuin]

I used mine until the battery died. I had a spare battery, but by the time I remembered where it was, I no longer cared about the Poke Walker.

 

[Leonhart]

Initially when I purchased my copy of HeartGold version, I neglected my Pokewalker. It wasn't until the Yellow Forest Wi-Fi distribution that I used my Pokewalker device, and only because I wanted a Pikachu with Surf/Fly.

 

[ᎠᎬȺᎢḤ]

I used mine for months when I got HG and it was my main reason for playing in the first place, except my Pokewalker's battery died fast.

 

[KingMinun]

I used it for walking the dog. I remember using it and trying to up my steps to unlock new items and capture pokemon, so I remember walking further and discovering new places that 7 years later, I still use today, and still reminds me of the Pokewalker. Got so many memories of using it and having my dog by my side.

 

[sanae]

i actually used both of them all the time, at least until my games were stolen. i think i eventually lost one of the pokewalkers somewhere, but have the other boxed up at home. they were a pretty neat concept/add-on, and the additional routes and whatnot they released were pretty interesting (don't remember anything beyond the bounce magikarp though). being able to get evolutionary stones and other rare-ish things easily was nice as well.

 

[RedJirachi]

I was never able to figure it out