Re: I wonder...
I also wonder how jammable / spoofable they are.?
Depends on how they encode their identity. If each system uses a static encoding pattern then I'd say it was pretty simple.
If they use a dynamic encoding that changes unpredicably over time (sort of like PFS for LIDAR) then it would be quite a bit harder. But, given the propensity for only securing against known threats, I would imagine even that encoding would be broken fairly quickly.
Biting the hand that feeds IT
