Thanks for such an extensive answer. I can orient myself using Sun, so outdoors it's not really a problem. I could use watch, but I find it rather intrusive as well and it doesn't feed the data -- I have to look at it to get information.
To my knowledge there are no internal-magnet systems that impart a north-knowledge by having them inside your body.
This is useful.
I am imagining the creation of such a device; it seems to be a tricky one. most compasses work on a needle-like object being able to float in the direction of the earth's magnetic field. So to make something like that which can be used internal to the body and provide feedback about where it is; seems difficult.
I have been wearing a magnetic ring for several weeks and plan to write about my experiences, but essentially it would also not do what you want it to do.
North paw is the only thing I can think of. I can suggest more wearable devices but they req...
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