Boingo Wireless (http://www.boingo.com), a WiFi provider, says the iPad is now the second most popular non-laptop device connecting to its WiFi networks, displacing Android devices and more than doubling the daily number of visits for the previous second place device.

“It’s stunning how quickly the iPad has established itself as a force in Wi-Fi,” says Dave Hagan, president and CEO of Boingo Wireless. “After four days in market, it is already being more widely used than other Wi-Fi enabled mobile devices that have moved millions of units.”

The iPhone is still the indisputable king of mobile devices, representing nearly 90% of all non-laptop connections in Boingo’s airports. The iPad registered 5.4% of all device connections, while Android tallied 2.5%. Blackberry phones and iPod Touch MP3 players accounted for less than 2% each of total visits. Windows Mobile was less than 1%.

This data represents all Wi-Fi enabled non-laptop devices in Boingo’s managed network, which includes 58 airports, the Washington State Ferries, and several sporting arenas and convention centers. In the context of this data, a “connect” is any device that associated to the SSID, received an IP address and loaded the sales portal in the venue. It provides a representative sample of market penetration for the various platforms of WiFi enabled devices.

Boingo combines more than 125,000 locations from 167 leading WiFi operators around the world into a single worldwide network spanning 103 countries.