WiFi and Cellular

When you're traveling, it's nice to be able to find free WiFi service, and to know if and where your cell phone is going to work. If you're a connected traveler, here are a few high-tech mashups you might find useful.

• Cell Phone Reception and Tower Search (www.cellreception.com) Find out where the nearest cell phone tower is, and what kind of reception you should expect

• gWiFi.net (www.gwifi.net) A map mashup of free WiFi hotspots across the country, as shown in Figure 19.11

  Figure 19.11. Free WiFi hotspots in New York, courtesy of gWiFi.net.

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• Sharemywifi.com (www.sharemywifi.com) Find out which of your neighbors have unencrypted WiFi networks that you can leech off of

• findu.com (www.tech-software.net/findu.php) If you're into old-school wireless technology, you'll love this ham radio call sign finder