There are 4 fundamental forces in physics currently.
- strong nuclear force
- weak nuclear force
- electromagnetic force
We can basically merge the weak nuclear force as a by-product of the strong nuclear force due to quarks at the edge of the gluon field.
Given you used the words magnetic induction, you are necessarily using the electromagnetic force, so its in layman's term means just (non ionizing) "radiation".
The issue in the human is between the ears is almost perfectly the spinal cord, through which pretty much all the signals to keep you alive pass through. Test: cut off human head and see if patient survives.
Now I am not saying something is unsafe or bad - no, that can only be found through experiments and evidence - I am saying there is an inherent upper limit of using any technology in that place between the ears. Currently the between-ear signal is dominated by using a wire external to the skull (around the outside) and the buds just send vibration (which is the electromagnetic field through lower frequency radiation) into the ear. If you seek to remove the wire, the physical matter in the core of the human is then the performance loss, if you seek to remove that barrier then it can become dangerous.
I am sure it can be solved safely. Just cautiously, via testing.