cookies
Cookies are small files that make it possible to store specific device-related information on users' access devices (PCs, smartphones, etc.). They serve for the user-friendliness of web pages and thus the users (for example storage of login data). On the other hand, they are used to collect the statistical data of website use and to analyze them for the purpose of improving the offer. Users can influence the use of cookies. Most browsers have an option to restrict or completely prevent the storage of cookies. However, it is pointed out that the use and especially the comfort of use are limited without cookies.
You can find many online advertising cookies from companies via the US-American website http://www.aboutads.info/choices/ or the EU-site http://www.youronlinechoices.com/uk/your-ad-choices / manage.