Japan is full of them
And when I've tried navigating in large cities (Tokyo included) and found that my stupid tablet's GPS relied on getting the ephemeris data from the internet, and never through the GPS itself, I couldn't start navigating until I connected to something.. and I spent hours trying to find an open network, unsuccessfully. Happened twice, the second time in Nagoya. No open networks. Well, Starbucks have that, but then you need to find one.
If you want a very specific example, the original nintendo DS can only connect to WEP connections, which meant that when I was there I was able to play parts of DS games that wouldn't have been accessible in the west