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Real world Comms network, they would either be using something like voip or straight radio for Comms. If transmitting sensor data is one of the things seems like voip. If it is akin to voip, by being connected to their Comms I could in theory access any systems on that same network. If they are transmitting the sensor data I would think it would be on the network. I am wanting more to give the sensor false information, nothing specific, but just enough to make their sense of where we are unreliable.
That makes sense to me.
I was thrown off by the way the books treat sensor jamming in regards to starships...where Electronics Countermeasure Suite (AoR p.286) and the Miradyne Ltd. 4X-Phantom Sensor Jammer (AoR p.267) are differentiated from a "close range comlink jammer" (AoR p.263).
Let's make it a Difficulty 2 Computers check using the jamming rules. If you succeed, you jam the walker's sensors (which can be disabling them or making a false "phantom" image of your location), and the enemy must make a Difficulty 2 Computers check as an action to get sensors back online.
Additionally, for every 2 successes you get that increases the Difficulty required by the enemy check.
And for each Triumph you get you can increase the number of targets whose sensors you jam (i.e. the two speeders which both have sensors, albeit less powerful than the walker). The shuttle is still too far out for you to attempt to jam its sensors.