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  2. Pisonet - Wikipedia

    en.wikipedia.org/wiki/Pisonet

    Piso WiFi systems are built with components like single-board computers (e.g., Raspberry Pi or Orange Pi), coin acceptors, microSD storage, and routers. They provide an inexpensive alternative to traditional internet subscriptions, making them especially popular in low-income communities and areas with limited connectivity.

  3. Captive portal - Wikipedia

    en.wikipedia.org/wiki/Captive_portal

    A common method is to direct all World Wide Web traffic to a web server, which returns an HTTP redirect to a captive portal. [8] When a modern, Internet-enabled device first connects to a network, it sends out an HTTP request to a detection URL predefined by its vendor and expects an HTTP status code 200 OK or 204 No Content.

  4. Wireless security - Wikipedia

    en.wikipedia.org/wiki/Wireless_security

    Wireless security is the prevention of unauthorized access or damage to computers or data using wireless networks, which include Wi-Fi networks. The term may also refer to the protection of the wireless network itself from adversaries seeking to damage the confidentiality, integrity, or availability of the network.