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More About Cookies

Basically, there are two types of cookies. One kind is called a "Persistent Cookie." A persistent cookie is stored on your hard drive as a text file, usually in your browser preference folder. These cookies can be set to last for years by the site, and the site that sent it will remember you for days, weeks, months, even years later - as long as the file is still on your hard drive.

A second kind of cookie is the "Non-Persistent Cookie." The non-persistent cookie is very temporary. It is NOT stored on your hard drive, but is stored in memory and is usually set to last from 20 minutes to a few hours. Regardless of how long it lasts, the non-persistent cookie goes away as soon as you quit your browser. Therefore, the site that sets this kind of cookie does not remember you the next day, possibly even the next hour.

IRE's Members-Only section uses non-persistent cookies, which last only 30 minutes. After 30 minutes, the cookie disappears, and you will be asked to login again the next time you access members-only content. Non-persistent cookies are used primarily for technical reasons such as providing seamless navigation. For example, IRE's Members-Only pages use non-persistent cookies in order to permit members to navigate through the pages without requiring them to log on to each additional page they wish to visit.

Read more about how our server uses non-persistent cookies: