In order to use a Vox caster, dataslate or auspex, do you need Tech-use?
Also the common (or scholastic lore) for tech mentions knowing some litanies and prayers used to soothe machine spirits. Would that give a bonus? Or allow you to use them? Or it just doesn't do anything?
To use an Auspex it kinda seems you need Tech-use to turn it on and press the right buttons.. However to actually understand what it shows, it seems Scrutiny is used? In the description it mentions being used for that.
When it comes to Demolitions, it seems Tech-use is used. You can use it to make tripwires and all kinds of similar explosive thingies. I would call them "traps" but….
Security skill has the special ability of Traps. Which you, in the example, use to for instance place a handgrenade under a body, rigged to explode.
So, do I need Security to come up with the brilliant idea with the grenade body, and then roll both Security AND Tech-use, or just one of them. Do I need both Scrutiny AND tech-use to use an auspex (and understanding we are not under attack by little green blobs, clearly shown on the screen). If you have tech-use and not the lore for tech, be it scholastic or common, would that seriously offend any techpriest nearby (as you simply use the item as intended without the holy rituals needed) or does it include the minimum prayers necessary to operate them. And if it does, what's the point of the lore skill?