an invisible image which can be used to capture session or user behavior information without the user's knowledge or consent
a small graphic image, typically used in connection with cookies, that is placed on a web site or in an email message
a small graphic that we place on the site or in an email
a small, usually one pixel, graphic that is invisibly embedded on a web page
a tiny, invisible one-pixel graphic that can be embedded in a Web page or in an HTML formatted e-mail (to find out who opened the message)
a tiny line of code that is programmed to collect certain information about a visit to a particular website or website page
A Web site or email graphic designed to monitor who is reading the Web page or email.