I also got a couple of digivices from Digimon, from the second and fourth(?) season. I remember they had story modes and contacts at the top for multiplayer gameplay, as well as a walking sensor for story advancement which you could cheat by just shaking the device for hours. My friend with whom I battled it out never had a chance because he actually tried walking the distance. That's until he noticed the gap between our digimon was getting too big despite all the walking he did, and I ended up telling him the trick. Quite a facepalm moment right there. Those were neat little devices for our ages back then.