What a sweet Raspberry Pi project: connect to a wifi network up to about 2.5 miles away using this slick wireless relay you could hide in a library book.
Proxyham is made of a Raspberry Pi computer with a Wi-Fi card, connected to three antennas, a Wi-Fi one that connects to the internet at a public space (think Starbucks or a public library) and a dual antenna that transmits at 900MHz, this is used to communicate and beam data back and forth with the user, who can be as far as 2.5 miles from the device, according to Caudill.
http://motherboard.vice.com/read/with-this-device-you-can-connect-anonymously-to-wi-fi-25-miles-away
The real trick is that there’s no real reason (beyond accumulating latency) that this kind of relay can’t be repeated over and over. The hacker mind boggles.