If you are in the US and have a Part 107 Certificate and you are on vacation and you want to fly your sub-250 gram drone around to take family or travel photos and your drone does not have internal RID and you forgot your RID Module, then if you...
TRUST is a requirement to operate Remote controlled vehicles in My state and YOURS! even if you are flying part 107 flights You need a TRUST card! TRUST has nothing to do with Drones really it applies to the Remote Control operator.
YES you need...
Recreational registration - one number for the person used on one or more drones.
Commercial - unique number for each drone.
TRUST required for all recreational flights. No safe side. No refusals. No fuss about right/wrong, just simple clarity.