The SQF 8 Code Changes | Guidance Document says:
11.6.8.3 Vehicles (e.g. trucks/vans/containers) shall be secured from tampering using a seal or other agreed upon, acceptable device or system. New element.
The Guidance Document is EMPTY for this new (and very hampering) code. Not just empty, but unchanged from 7.2!
It looks like SQF got halfway through and then just gave up. This is a big change for us and we are hanging in the wind.