You must have the following resources to use the Windows Live Presence API:

• The ability to send requests by using the Hyper Text Transfer Protocol (HTTP 1.1)
  
• The ability to parse JSON
  

The following browsers are supported for use with the Windows Live Presence API:

• Microsoft® Internet Explorer® 6; Windows Internet Explorer 7; Windows Internet Explorer 8
  
• Firefox 1.5; Firefox 2.0; Firefox 3.0 on Windows
  
• Firefox 1.5, Firefox 2.0; Firefox 3.0 on Macintosh OS X
  

A user is required to have a Windows Live™ ID to enable sharing their presence through the Windows Live Presence API. This can be obtained by visiting the Windows Live Account page.