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Cookie name	Provider	Purpose	Expiry
PHP_SESSID	www.optocenter.gr	This cookie is native to PHP and enables websites to store serialised state data. It is used to establish a user session and to pass state data via a temporary cookie, which is commonly referred to as a session cookie.	Session
PrestaShop-#	www.optocenter.gr	This cookie helps keep user sessions open while they are visiting a website, and help them make orders and many more operations such as: cookie add date, selected language, used currency, last product category visited, last seen products, client identification, name, first name, encrypted password, email linked to the account, shopping cart identification.	480 hours
rc::a	Google	This cookie is used to distinguish between humans and bots. This is beneficial for the website, in order to make valid reports on the use of their website.	Persistent
rc::c	Google	This cookie is used to distinguish between humans and bots.	Persistent
__cfduid		Technical cookies required by CDN provider Cloudflare.	30 days

Cookie name	Provider	Purpose	Expiry
collect	Google	It is used to send data to Google Analytics about the visitor's device and its behavior. Track the visitor across devices and marketing channels.	Session
r/collect	Google	It is used to send data to Google Analytics about the visitor's device and its behavior. Track the visitor across devices and marketing channels.	Session
_ga	Google	Registers a unique ID that is used to generate statistical data on how the visitor uses the website.	2 years
_gat	Google	Used by Google Analytics to throttle request rate	1 day
_gat_gtag_UA_*	Google	Used to throttle request rate.	1 minute
_gd#	Google	This is a Google Analytics Session cookie used to generate statistical data on how you use the website which is removed when you quit your browser.	Session
_gid	Google	Registers a unique ID that is used to generate statistical data on how the visitor uses the website.	1 day

Cookie name	Provider	Purpose	Expiry
ads/ga-audiences	Google	These cookies are used by Google AdWords to re-engage visitors that are likely to convert to customers based on the visitor’s online behaviour across websites.	Session
fr	Facebook	Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers.	3 months
IDE	doubleclick.net	Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.	1 year
NID	Google	Registers a unique ID that identifies a returning user's device. The ID is used for targeted ads.	6 months
tr	Facebook	Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers.	Session
VISITOR_INFO1_LIVE	youtube.com	Tries to estimate the users' bandwidth on pages with integrated YouTube videos.	179 days
YSC	youtube.com	Registers a unique ID to keep statistics of what videos from YouTube the user has seen.	Session
yt-remote-cast-installed	youtube.com	Stores the user's video player preferences using embedded YouTube video	Session
yt-remote-connected-devices	youtube.com	Stores the user's video player preferences using embedded YouTube video	Persistent
yt-remote-device-id	youtube.com	Stores the user's video player preferences using embedded YouTube video	Persistent
yt-remote-fast-check-period	youtube.com	Stores the user's video player preferences using embedded YouTube video	Session
yt-remote-session-app	youtube.com	Stores the user's video player preferences using embedded YouTube video	Session
yt-remote-session-name	youtube.com	Stores the user's video player preferences using embedded YouTube video	Session
_fbp	Facebook	Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers.	3 months

ads/ga-audiences

These cookies are used by Google AdWords to re-engage visitors that are likely to convert to customers based on the visitor’s online behaviour across websites.

Session

fr

Facebook

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

3 months

IDE

doubleclick.net

Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.

1 year

NID

Google

Registers a unique ID that identifies a returning user's device. The ID is used for targeted ads.

6 months

tr

Facebook

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

Session

VISITOR_INFO1_LIVE

youtube.com

Tries to estimate the users' bandwidth on pages with integrated YouTube videos.

179 days

YSC

youtube.com

Registers a unique ID to keep statistics of what videos from YouTube the user has seen.

Session

yt-remote-cast-installed

youtube.com