Tracking & data storage on optica.org

ID used to identify users

ID used to identify users

ID used to identify users and sessions

Used only with old Urchin versions of Google Analytics and not with GA.js. Was used to distinguish between new sessions and visits at the end of a session.

Contains information about the traffic source or campaign that directed user to the website. The cookie is set when the GA.js javascript is loaded and updated when data is sent to the Google Anaytics server

Used to monitor number of Google Analytics server requests

Used to distinguish new sessions and visits. This cookie is set when the GA.js javascript library is loaded and there is no existing __utmb cookie. The cookie is updated every time data is sent to the Google Analytics server.

ID of the proof of consent storage within the Consent Studio platform.

Local storage for the consent given by the user for certain categories of cookies.

Boolean that keeps track of whether the user has seen the cookie banner at least once.

When a website has implicit consent configured, this cookie stores whether or not it has been triggered or not.

This cookie is set by the load balancers and allows us to evenly balance the number of users across the web servers that we use.

Used by Google to prevent fraudulent login attempts. This also contains a Google user ID which can be used for statistics and marketing purposes following a successful login

Used to store guest consent to the use of cookies for non-essential purposes

Cloudflare's bot products identify and mitigate automated traffic to protect your site from bad bots. Cloudflare places the __cf_bm cookie on End User devices that access Customer sites that are protected by Bot Management or Bot Fight Mode. The __cf_bm cookie is necessary for the proper functioning of these bot solutions.

The _cfuvid cookie is only set when a site uses this option in a Rate Limiting Rule, and is only used to allow the Cloudflare WAF to distinguish individual users who share the same IP address.

Whether a CAPTCHA or Javascript challenge has been solved.

Records that your browser's Global Privacy Control signal was detected, so non-essential cookies were automatically declined on your behalf.

This cookie is set by Reddit and is used for remarketing on reddit.com.

Used by Google AdSense for experimenting with advertisement efficiency across websites using their services.

This cookie is used for targeting, analyzing and optimisation of ad campaigns in DoubleClick/Google Marketing Suite

Used by LinkedIn to track the use of embedded services.

Used by the social networking service, LinkedIn, for tracking the use of embedded services.

Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers

Stores when you arrived from another website, so Meta can credit the right advert or link for your visit.

Stores the website you came from, so Meta can credit the right advert or link for your visit.

Stores the identifier of the advert you clicked, so a later purchase or sign-up can be credited to the right campaign.

This cookies is used to collect website statistics and track conversion rates and Google ad personalisation