Intel Compute Sticks support for Bluetooth keyboards during POST and within BIOS Setup.
However, Intel NUC does not have this feature.
I hope this feature is provided in the new BIOS of Intel NUC.
The SO is correct; the ICS *do* have Bluetooth keyboard support pre-O/S.
I would agree that it is not unreasonable to be expecting Bluetooth keyboard support pre-O/S. I wouldn't bet on this feature appearing in the future unless you do something about it, however. Call Intel Customer Support directly and open a ticket specifically requesting this feature.
What you get is what you fight for,
I called support and was told that it wasn't a department that would accept user requests. I was told that Intel has no department to accept user requests. It can not be helped.
Unfortunately, most companies don't take user requests for features due to liability reasons. If you request a feature and it gets implemented into a product, you could potentially sue a company for having your feature. Sounds dumb but I have heard of this happening before. I remember someone did this with Apple in the past. That is why they will not accept feature requests for any of their products.