SLDC trucks still use green seals, most trucks though have the electronic seals on them now. Townie is 100% correct as to company policy regarding recieving, but it really isnt that much of a big deal anymore. Logistics are notified as soon as the truck seal is broken, and the truck is not where it is supposed to be. Chances are if somebody is going to steal something, it will be either before the stock even gets on the truck, or after it has been recieved at the store.I'm not sure about the exact mechanics of them, but basically they are a loss prevention device. if truck door opens or whatever, this breaks the seal, since the driver will know in advance how many stops he will be making, the seal number should correspond to the right location (if that makes sense)
e.g. liquor truck is going from warehouse -> Mona Vale -> Boronia Park -> Macquarie Ryde -> Etc.
the warehouse will initially seal the truck with say seal number A06899, when it arrives at mona vale, seal is broken, and new seal is put on A06900 if it arrives at boronia park with seal number A06901 instead then you know somebody has opened the truck door and may have taken something.
Unsealed deliveries should NEVER be accepted (if they are supposed to be sealed), unless you have been advised by logistics before then, and even then you should check that nothing is missing from the truck.