Client Code Cookies - Cookie Details

What information is collected in the cookies?

The information collected in the ForeSee cookies is used to provide segmentation information and also help provide the best user experience by answering the following questions:

  • How many pages have been viewed?
  • What survey definition should be applied?
  • Has the sampling criteria been met for an invitation?
  • Has an invitation been seen in this session?
  • What customer parameters have been captured?
  • When should the user be invited again?
  • What URL is the visitor on currently?
  • What referring URL did the visitor come from and what search terms were used?
  • What browser and OS did the visitor use?

 Is PII collected in the cookie?

Personally Identifiable Information (PII) is never intentionally collected by ForeSee. We do, however, have the capability of collecting parameters identified by our clients through a URL, JavaScript variable, or cookie that could provide segmentation information. See Customer Passed Parameters (CPPs).

When do Cookies expire

All user information stored in the cookie expires after 90 days. Beyond 90 days, the cookie becomes empty but lives for 20 years. This long expiration is only to determine if a site visitor is new or returning. No user information is stored longer than 90 days.

What Cookies are Set?

In modern code versions, the following cookies are used:

Code Version 19.3.0+ (Current)

Cookie Name 1st/3rd Type Notes
_4c_ First-party Performance For Code Version 19.3.0+

  • Other session cookies may be set by the CDN for load balancing. If set, these cookie names would contain “ServerSlough-proxyVIP” or “CS-“. These cookies are temporary and removed at the termination of the user’s session.
  • Cookie compression is introduced in order to reduce the size of the cookie and also makes the cookie unreadable.
  • Cookie is automatically set to the highest level domain.


Code Version 19.1.x and 19.2.x

Cookie Name 1st/3rd Type Notes
_fsspl_ First-party Performance For Code Version 19.1.x and 19.2.x

Code Version 19.1.x+

Cookie Name 1st/3rd Type Notes
fsice Third-party Functionality For Code Version 19.1.x+
_fsspl Third-party Functionality For Code Version 19.1.x+

Code Version 19.0.x+

Cookie Name 1st/3rd Type Notes
acs.t First-party Functionality For Code Version 19.0.x+

Code Version 19.0.x and Below

Prior to v19.1.x Client Code, ForeSee utilized three cookies. Two session cookies (fsr.s and fsr.a) which store information relating to the survey control and operation, as well as some basic information, such as the number of pages a user has viewed and the URL’s the user was on when they entered and left the site.

In addition to the items mentioned in the prior paragraph, the ForeSee cookie can contain Customer Passed Parameters (CPPs). This data can range from values stored within a variable, cookie, or URL parameter. To pass CPPs, special coding needs to be programmed into the survey configuration file in order to pass any additional data. This code is client controlled so they know what data is being passed when the code is implemented.

ForeSee also has a persistent cookie (fsr.r) which contains information indicating when a user has received a survey invitation in order to prevent the same user from being presented with another invitation for a specified period of time.

ForeSee Cookies

Other articles in this section:

  1. Cookie Details (current article)
  2. Reducing Cookie Size