A cookie is a small amount of data that is sent from a web server to your browser. It is normally used to assign a unique identification to your computer and securely store information such as user IDs, passwords, preferences, and online profiles.
It is stored on the hard drive of your computer. You can choose not to have cookies delivered by the ScanMedicine site by changing your browser settings. Different web sites can send their own cookies to your computer. To protect your privacy, your browser only allows a web site to access the cookies it has already sent you, not the cookies sent by other sites.