I've seen a few hacky projects (e. g. https://www.carlosterminel.com/wearable-compass https://www.carlosterminel.com/wearable-compass) over the years about hapt

I've seen a few hacky projects (e. g. https://www.carlosterminel.com/wearable-compass https://www.carlosterminel.com/wearable-compass) over the years about haptic belts, and I've been wanting to try one of these, but I've never seen them commercialized. Have you tried them? Otherwise, could you please describe why the sense of north "kind of sucked"? In my experience, having a flagship Android phone with unreliable compass such that I cannot even get my bearings when leaving a subway station, is extremely annoying. Such a belt would seem more useful to me.