WHAT ARE COOKIES AND HOW DO THEY WORK?
Cookies are text files containing a small amount of data that an Internet browser receives from a web server and stores on your computer in the form of a name – value. These data are sent back to the web server the next time you visit the website. Therefore, the website remembers the actions you performed on it for a period of time, so you do not have to re-enter this information. Cookies are commonly used, for example, to store the contents of a shopping cart in e-shops, and to store other user preferences associated with passage through the website. We can distinguish two basic types of cookies, first-party and third-party:
- First-party cookies – are created during the initial loading of the website and the first interaction with the server of the website operator. Data about the selected colour scheme, web resolution, language settings, and many other parameters are stored, among other things. The values are created by the visited website. These data are used only by the website that stores the data in the cookies.
- Third-party cookies – set a domain different from the domain of the website on which the website user is located. They typically arise when browsing websites and displaying various advertising banners. After downloading and loading a banner, interaction with the third-party server will take place, and this party will mark the user with cookies, which can then be freely tracked if the user joins another website with the same banner.
HOW TO MODIFY THE USE OF COOKIES
The use of cookies can be modified according to your preferences. You can delete all the cookies that are already stored on your computer, and most browsers also offer the option to prevent cookies from being stored on your computer. However, if you use this option, you may need to manually adjust some preferences each time you visit the website, and restrictions on certain services and website features cannot be ruled out. For more information on setting and processing cookies, see the AboutCookies.org website.
DISABLING ANALYTICAL COOKIES
We use Google Analytics to analyse traffic on our website onlyworks with first-party cookie files that do not store any personal data. Each visitor is identified using a computer – user – browser session. Google Analytics uses a site tagging method where JavaScript code is placed on each page to provide data from the visitor’s browser. The Javascript code will connect to the Google Analytics server that collects the data each time it loads the site, and it uses cookies to pass the data. You can easily control the processing of such cookies if you use this Google Analytics Opt-out plugin available for Microsoft Internet Explorer 11, Google Chrome, Mozilla Firefox, Apple Safari and Opera. For more information on Google’s use of cookies, see articles How Google uses cookies and The types of cookies Google uses.
Most advertising cookies and trackers can be automatically blocked by the Ghostery browser extension. Keep in mind that our website and information systems may stop working properly if you restrict or disable some cookies.
TYPES OF COOKIES USED ON THE TA CR WEBSITE
| Name | Provider | Functionality | Expiration Period |
| _ga | tacr.cz (Google Universal Analytics) | Cookie set by Google Universal Analytics. This is the main cookie used by Google Universal Analytics, which organises data in the Analytics account from the tacr.cz domain and subdomains that are subject to GUA measurements (e.g.: isrb.tacr.cz, inkaviz.tacr.cz, ceskynapad.cz, dafos.tacr.cz, starfos.tacr.cz, visual.tacr.cz). | 2 years |
| _gat | tacr.cz (Google Universal Analytics) | Cookie set by Google Universal Analytics. This automatically monitors and regulates traffic and prevents problems that could occur when visitors navigate around the website. It performs a similar function to the _utmt cookie. | 1 minute |
| _gid | tacr.cz (Google Universal Analytics) | Cookie set by Google Universal Analytics. This stores and updates a unique identifier for each page the user has visited. It is used to generate statistical data with information about the use of the website by the user. | 24 hours |
| __utm.gif | google-analytics.com | Contains Google Analytics tracking script. This calls and activates a tracking script that looks like an HTTP request to display a 1×1 pixel image with additional parameters. This HTTP request contains details about the web browser and the computer that submits the request and opens the web page. It also transmits information such as the address of the website being opened, the type of browser, the page with the link from which the user came, and the language interface. | Session |
| __utma | tacr.cz (Google Analytics) | Stores visitor identifiers. The __utma cookie is a value (completely unique ID) that is set the first time the monitored website is visited. If a situation arises where, for example, the value of the cookie is deleted, a completely new __utma cookie with a different ID will be created for the visitor upon a new visit. It is used to distinguish between unique and repeat website visitors. | 2 years |
| __utmb | tacr.cz (Google Analytics) | Stores session identifiers. This creates and maintains a session between the visitor and the website. The __utmb cookie is updated each time a new page is loaded. If the value does not exist, a completely new one is created. The data are usually valid for 30 minutes from the last update, i.e., the last time a tracking code page was loaded. Google Analytics uses this file in conjunction with the _utmc file to calculate time-based metrics such as: Time on Page or Time on Site. | 30 minutes |
| __utmc | tacr.cz (Google Analytics) | Stores session identifiers. The __utmc cookie works with __utmb and does not have a set expiration time. When the browser window is closed, the data are deleted. It is used in cases where the visitor closes the web browser and reopens it with the same page in a period of short time. Google Analytics uses this file to calculate time-based metrics such as Time on Page or Time on Site. | Session |
| __utmt | tacr.cz (Google Analytics) | Regulates the number of service requests. This automatically monitors and regulates traffic and prevents problems that may occur when visitors navigate around the page. | 10 minutes |
| __utmz | tacr.cz (Google Analytics) | Stores the source of the visitor, i.e., from where the visitor got to the tracked website. It provides information on whether a visitor typed the URL directly into the browser’s address bar, selected it from a full-text search engine, clicked on a link to one of the linked webpages, or used a link from an email or social network. The information is used to calculate traffic sources, search engine traffic, and navigation around the website. | 6 months |
| GPS | youtube.com | Cookie set by YouTube (unique mobile ID) to play videos and provide better featured video results based on Global Positioning System data. | 1 day |
| IDE | doubleclick.net | Cookie set by Google DoubleClick and used to personalise video ads displayed to YouTube users or banner ads on websites. | 1 year |
| PREF | youtube.com | Registers a unique identification number that Google uses to keep track of how a visitor uses YouTube videos from different websites. | 8 months |
| r/collect | doubleclick.net | This advertising cookie is stored in Google DoubleClick and is used to personalise the ads displayed to users based on previous website visits. | Session |
| test_cookie | doubleclick.net | Used to verify that the user’s browser supports cookies. | 1 day |
| UUID# | tacr.cz | Stores data about the language version of the browser. This information is used to play the correct language version of the YouTube video. | Session |
| VISITOR_ INFO1_LIVE | youtube.com | Stores connection speed estimation data to determine video quality on websites with embedded YouTube videos. | 179 days |
| YSC | youtube.com | Registers a unique ID that keeps track of what YouTube videos a user has seen. | Session |
| yt-remote- cast-installed | youtube.com | Stores YouTube video player user settings that are embedded on the website. | Session |
| yt-remote-connected- devices | youtube.com | Stores YouTube video player user settings that are embedded on the website. | Persistent |
| yt-remote-device-id | youtube.com | Stores YouTube video player user settings that are embedded on the website. | Persistent |
| yt-remote-fast-check-period | youtube.com | Stores YouTube video player user settings that are embedded on the website. | Session |
| yt-remote-session-app | youtube.com | Stores YouTube video player user settings that are embedded on the website. | Session |
| https:// www.tacr.cz/ | tacr.cz | Stores the data needed to display websites correctly depending on the device used. It is a cookie set by the used CMS. | 29 days |
| BIGipServer ~AP-HW01 ~pool_vs_ ista.tacr.cz_ https | ista.tacr.cz | Cookie set by the HTTPS service, based on which the https connection to the relevant application server is maintained. When creating a connection, the client is directed to one of the application servers – during the validity of the security context on the application server, the user must not be redirected to another application server by the Load Balancer. | Session |
| JSESSIONID | ista.tacr.cz | Essential cookie for websites running on Java Server Pages. The value is set by ISTA to identify the user and maintain context between each user’s request coming to the server – for example, the user’s login status. The cookie expires when the user ends the session (logs out, closes the browser window, etc.) | Session |
| PLAY_ SESSION | isrb.tacr.cz | Essential cookie for websites running on Java Server Pages. The value is set by the ISŘB for the purpose of user identification and maintaining context between individual user requests coming to the server – for example, the user’s login status. The cookie expires when the user ends the session (logs out, closes the browser window, etc.) | Session |
| JSESSIONID | pruvodce.beta. tacr.cz | Essential cookie for websites running on Java Server Pages. The value is set by the ISŘB for the purpose of user identification and maintaining context between individual user requests coming to the server – for example, the user’s login status. The cookie expires when the user ends the session (logs out, closes the browser window, etc.) | Session |
| csrftoken | dafos.tacr.cz starfos.tacr.cz | (Cross-site Request Forgery (CSRF) protection. For further information see the following article. | Session |
| sessionid | dafos.tacr.cz starfos.tacr.cz | Used for anonymous user session identification. | 14 days |
| qos_token | .openstreetmap. org | Cookie set by the OpenStreetMap service. Qos – quality of service. Used to limit the number of requests to OpenStreetMap. | Session |
| _initial _referrer | e.infogram.com (visual.tacr.cz) | Cookie set by the Infogram service. The #TAČRvDatech website uses the Infogram service to graphically present information on the support of research, development, and innovation. The first time the website is opened, the cookie stores the address of the domain over which the graphical data visualisation is used. This cookie is essential for the proper functioning of the website. | Session |
| __cfduid | .jifo.co (visual.tacr.cz) | Cookie set by Cloudflare via the Infogram service. Cloudflare is a service that provides protection against various types of attacks for common websites, as well as CDN and other optimisation options. CloudFlare caches static resources such as images, styles, or js files and then sends them directly to the user without the user’s request for the given resource being directed to the server. The cookie is essential for the proper functioning of the #TAČRvDatech website. | 365 days |
If you have any questions or comments about cookies, please contact us at the e-mail address tomas.synek@tacr.cz.