Headband of intellect and Trained skill

[Cuttler]

If you create/upgrade a headband of intellect, can you add (and then use) a trained only skill to it, or it has to be untrained only skills?

For example: could you choose disable device as the skill associated with it when you create a new headbeand of intellect and then use it just like if you were trained into that skill?

thanks

[Ravingdork]

Not really sure what you're asking.

You gain ranks in the associated skill equal to your class levels (and hit dice, if any). It does not become a class skill if it wasn't one already (so no +3 bonus). If you already have ranks in the skill, these new ranks overlap with your existing ranks, and do not stack.

When you create (or upgrade) a new headband, you can choose what skill(s) it grants. To my knowledge, the creator does not necessarily need to possess ranks in said skill.

Does that help?

[Chemlak]

To add to RD's answer:

The skill(s) a headband has can be any skill(s), trained only or not, chosen at the time of creation of the headband.

[dragonhunterq]

RD and Chemlak are correct.
Yes, you can add disable device to a headband, when you wear it you gain those skill ranks. For all intents and purposes you are now trained in disable device.