So after a game tonight with scum where I almost definitely would have won against a whisper build if I had feedback array, assuming the following two things apply to it.

1) You can use it more than once. - I don't see anything on the card about discarding it, so I'm almost positive that's true.

2) You can use it against ships you are touching. This one I'm more unsure about it, if you can't use it on ships you are touching, then it might not have made the difference for me in the game, but if you can, it definitely would have and I will strongly considering taking it from now on.

1) it doesn't discard, so if you put it on a ship with regenerating shields (IG88-A) you could use it over several rounds with next to no damage to yourself.

2) You are not attacking, so yes, you can use it on ships you are touching.

If the card had said "when declaring the target of your attack, you may instead suffer 1 damage and assign an ion token to your ship to cause that ship to suffer 1 damage", then you would not have been able to use it on ships you are touching. But it doesn't so you can.

Nice, that would have definitely won me the game last night, as whisper crashed into me 2 or 3 times, and was at range 1 out of arc another 1-2 times. Definitely gonna use it in the future as a phantom and other agile high PS ship counter.