3 ms·

The parabolic reflector might be unnecessary...

• bigiain 8y ago
  When I was a kid, I had this toy that was a cardboard tube with a 12-14" plastic parabolic dish on it and a microphone at the focus with earphones. It was surprisingly effective at letting you hear conversations from long-ish distances. Reading this page made me wonder just how good the NSA's version of that toy is these days assuming they've got multi-microphone and signal processing gear at least as good as (and probably an order or two of magnitude better than) what Apple will sell you for a few hundred bucks... Hi gain 2.4/5GHz antennas aren't "necessary" for wardriving, but they make new things possible if you do use them...