Radiant Vision Systems websites may employ "cookies". Cookies are small segments of text that are transmitted to a visitor's web browser and which store information on the visitor's hard drive. This information is later transmitted back to the server that originally sent it to the visitor upon a later visit to that site. Cookies allow servers to recall previous transactions to avoid repetition in data gathering. A visitor can configure their equipment hardware/software, usually with its browser to make notification when they receive a cookie. The visitor can refuse it.