NESPOT is a commercial subscription-based public Wifi

WIFI

WIFI is a radio station broadcasting a brokered format. Licensed to Florence, New Jersey, USA, the station is currently operated by Florence Broadcasting Partners, LLC.This station was previously owned by Real Life Broadcasting...

 network run by Korea Telecom

Korea Telecom

KT Corporation is a South Korean integrated wired/wireless telecommunication service provider. KT has an information & communications business, and has the largest portion of the South Korean local telephone and high-speed Internet business...

. It is by far the biggest such network in South Korea

South Korea

The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

, much like BT Openzone

BT Openzone

BT Openzone is a Wi-Fi hotspot service provided by BT Group. BT operates around 4,000 wireless stations in the UK, located in public locations such as cafés, hotels, pubs, stations and airports; BT's network accounts for 40% of the UK's wifi hotspot population...

 and T-Mobile in Europe

Europe

Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 and North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

. Currently they have an infrastructure compatible with the 802.11g protocol

Access to NESPOT requires the use of a Windows

Microsoft Windows

Microsoft Windows is a series of operating systems produced by Microsoft.Microsoft introduced an operating environment named Windows on November 20, 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces . Microsoft Windows came to dominate the world's personal...

 Executable file Presumably due to the use of nonstandard encryption schemes popular in Korea. Besides using a Windows executable, there is also the option of registering a MAC address, allowing access for systems not running Microsoft Windows