WiFi for dummies
Most people know by now that they should connect to a wireless connection using one of two encryption technologies: either WEP or WPA. Sure, WPA is a heck of a lot better than WEP, but even WEP is better than nothing. However, that's what most coffee shops use: nothing. Free wireless is an add-on, so they want to keep costs low. WEP or WPA would add additional complications and expense, and additional customer support where none would be available, so most coffee shops just run their wireless wide open.
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