User tracking
User tracking is a generic term that covers all the techniques of monitoring the movements of a user on a web site. User tracking has become an essential component in online commerce, where no personal contact to customers is established, leaving companies with the predicament of not knowing who they are talking to. Some companies, such as Red Eye, Cyber Dialogue, and SAS offer complete technology packages for user tracking and data analysis to online businesses. Technologies include software solutions such as e-mine, e-discovery, or WebHound
Whenever user tracking is performed without the explicit agreement of the user, or without laying open which data are collected and what is done with them, considerable privacy concerns have been raised.