A person or critter trying to detect a person, critter, or vehicle without using sensors is resolved with Perception + Intuition [Mental]
A person or critter trying to detect a person, critter, or vehicle with the help of remote controlling sensors is either resolved with Perception + Intuition [Sensor or Data Processing (whichever is lowest)] or Electronic warfare + Intuition [Sensor or Data Processing (whichever is lowest)].
An auto pilot acting on its own would roll Pilot + Clearsight [Sensor].
A person or critter trying to hide would oppose this test with Stealth + Agility [Physical]
A remote controlled vehicle trying to avoid detection would oppose with Stealth or Pilot (whichever is lowest) + Reaction [Handling or Data Processing (whichever is lowest)].
An auto pilot acting on its own would roll Pilot + [Model] Stealth [Handling]
Operating a bug scanner is resolved with Electronic Warfare + Logic [Rating].
If you turn it wireless on then you can instead resolve this test with Rating + Logic [Rating] (which might be handy since Electronic warfare is not a skill you are allowed to default to).
A device that is running silent can use its owners Logic (if it is an attended device) or its own Device rating (if unattended) + its own (or its master's) Sleaze rating (if it have one) to oppose the test.
(rules and such questions for previous editions are normally posted here:
https://forums.shadowruntabletop.com/index.php?board=29.0 )