To answer my own question: turning authorizations off doesn't affect sample containers, I needed to scan another auth
If you refuse to carry e-breach, thats the only way left. One thing about "Do not trigger settlement alarm" is whenever alarms are turned off, mission cant be really failed at that point, regadless if got scanned with illegals or even by going into firefight with entire settlement...
I wanted to walk past security without worrying about scans, hence why I dumped the auth going into the building. An E-Breach would have been game over.
Guards inside and outside have fixed patrol routes, and they are always preety much in same locations. Most of them can be simply avoided if waited until right moment where they can be passed by behind them, because they tend to scan random things too, during thier patrol route. If dampered footsteps mod is present on your suit, you can preety much sprint next to them and unless being seen by going into very front of them, they wont be hearin ya or even notice.
There is bunch of tricks to force them into another location or to have them look away... my favorite is dumping frag(its most loud of all of them) somewhere near (makin sure I am not seen) and they will come to investigate if they hear it, and then its good moment to sneak past them.
Last resort is simply kill them with proper silenced weapon, when they start to scan ya. An G5 tormentor or G5 P-15 with headshot dmg, will one shot them if they got hit into face, and pistols have high draw speed, way faster than they can react. Just wait until they pull thier scanner and start using it... then its right moment to do that.
Of course downside of that is getting
wanted with some
notoriety and
rep loss (unless its an anarchy faction - none of that apply at it) but that always better than failing a mission.