Anything you can quantize, can be learned as a new “psychic” interface/language, if contextual and relevant, continual.
From a phone, there’s a lot of information that can be useful, but may not class as a direct sensory stream, for forming deeper connections conceptualy/perceptually, anyway. Such as weather, that’s less often feedback->direct experience feedback than continual CO2/VOC level feedback. Lots of wiggle room here, though - having proprioceptive movement tied in can better help tune in a new sense, I think. Not that this is impossible on phone based signals, or that it’s needed for adding in new senses.
Something as simple as a clock for sense of time, could be turned haptic and fed over a phone, for example. haptic timekeeping device, but just quantize the data differently.
There’s a lot of ideas that work well as senses via a phone link, and others which the delay on the information throughput won’t work as well for, in terms of perceptual/conceptual binding. Compass feedback, gps guidance as you mentioned, for example - good use of phone data!
For other senses, too much delay, and things become jittery, not as easy to wrap up into a perceptual manifold, in terms of symbols.
There’s unfortunately not a lot of good wristbands for doing heavier lifting augmentive tasks, although people also haven’t really pushed what’s possible just via a single haptic feedback point and quantizing information.
You may be able to find a used neosensory wristband on eBay, although those cost quite a bit still, all things considered. Maybe a bhaptics wristband, although you’d have to reverse the protocol sending side (not impossible, sense shift firmware for esp32 does it the other way, emulating their hardware, so may have some good starting points)
However, you can get 8x output (or more) haptic wristbands if you DIY it for sub $50, if crafty.
I’ve been wearing some custom haptic wristbands daily for the past couple years to do extra thermal perception - Sensory Weavers. Like how a telescope or microscope gives lens into new information, these sorts of technologies (from me and others), are sorts of a psychoscope.
So when saying anything you can make a reliable sensory thread for, I do really think there is so much more we can weave into cognition, in theory.
Someday I’ll have DIY parts/kits for the ones I make - but it’s actually not that hard to get into, as far as DIY projects go, even with all of the shelf parts.
The software stack is the more complex part, which even someday that should be as easy as getting into custom 3d printing.
There’s so many possibilities of perspectives to be taken. If you’ve any questions towards specific implementations feel free to ask - lots of random information, references floating around in the head.
but still feels a bit less like something you only wear, and losing a sense because my internet goes down doesn’t seem quite right. But the wrist band seems like the way to stop dreaming and actually try something out.