Device for locating/identifying ore/rock/rare materials in a new realm?

(I'm sort of thinking aloud here so please bear with me.)

I've arrived at The Watch and naturally spending a lot of my time realm-hopping to gather T4 essence and T4/T5 materials. I still love exploration and part of me doesn't want to speed that process up or to make it meaningless.

However, if I want to gather something quickly and I have to realm hop a few times, the process gets a bit lengthy. So I've tried to think about ways of making the loop a bit more appealing.

I wondered if at end game we could get a quest to build a device - perhaps a little like the "Crude Remote Realmic Transmuter" - allowing us to scan a newly opened realm for materials? I don't mind if the quest is multi-stage and some effort is required ofc. Also maybe we would need to find and calibrate materials so the device recognises them? Perhaps it's an interesting marriage of fae magic and new techology - like a cross between a divining rod and a sonar - and we are conducting tests with it?

I don't mind if the device doesn't give exact information but merely rings a bell if the material is present? Or perhaps I can only search for one particular material at a time forcing me to focus on that? Maybe I also have to triangulate several devices?

I'm just throwing ideas about here obviously, and I definitely don't want exploration to become cursory, but at the same time I'd like an easier way to discover if a new realm is of use to me or not.

I'd genuinely like to know what other people think of this. Many thanks! :)