Not too enthusiastic about a purely IMU device, but its definitely cheaper than something like: Tundra Tracker by Luke Beno — Kickstarter – especially if one want a pack of three, for waist and feet. :7
it’s the software that solves it more than their belt-clip accelerometer, they could release that software as an app and just let your phone serve the same purpose with its imu from your pocket. the best way would be with a vive tracker though, then there wouldnt be any drift.
I believe there is already some kind of app for using your phone this way. If Deca Move is more SteamVR only then it might rely on LH tracking sensors on the hmd or controllers to counteract drift. Though WalkOVR and KatLoco already seem to have methods to counter drift.
@drowhunter only ever found trackpad more or less useless on a laptop for gaming use.
Just depends how Deca Launcher works. As we already in part have this with launching games with Steamvr. Seems like a lot of peripherals want there own launch portals.