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Wozniak: I didn't reduce chip count for manufacturing. I wanted to prove I was clever
(www.theregister.com)
This is a most excellent place for technology news and articles.
What makes you think he's snooping or even giving free wifi?
I see two scenarios:
The second is way easier, way funnier, and way more informative to others on the plane. I highly doubt he did #1 (would require additional hardware or hacking the chip's driver), and most likely did #2, especially since #1 would validate people using random WiFi SSIDs. That just doesn't match what I know about Woz.