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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.
The central feature that makes any system a patient portal is the ability to expose individual patient health information in a secure manner through the Internet. In addition, virtually all patient portals allow patients to interact in some way with health care providers.
Gartner defines a portal as "a Web software infrastructure that provides interaction with relevant information assets (for example, information/content, applications and business processes), knowledge assets and human assets by select targeted audiences, delivered in a highly personalized manner."