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| Name | Purpose | Storage duration | Type | Provider |
|---|
|
_pk_id
|
Used to store a few details about the user like unique visitor ID.
|
13
months
|
HTML
|
Matomo-id
|
|
_pk_ref
|
Used to store information about the user's referring website.
|
6
months
|
HTML
|
Matomo-ref
|
|
_pk_ses
|
Short-term cookie to save temporary data from the visit.
|
30
minutes
|
HTML
|
Matomo-ses
|
|
_pk_cvar
|
Short-term cookie to save temporary data from the visit.
|
30
minutes
|
HTML
|
Matomo-cvar
|
|
_pk_hsr
|
Short lived cookie used to temporarily store data for the visit.
|
30
minutes
|
HTML
|
Matomo
|
![Fresco from the foot of the Oppian Hill, Rome, 8th/9th c. Vatican Museums, 31448 (ex 119) (c) © Genevra Kornbluth [http://www.kornbluthphoto.com/OppianHillFresco.html]](/fileadmin/Institute/_processed_/6/2/csm_slider_hi_678175dd1d.jpg "Fresco from the foot of the Oppian Hill, Rome, 8th/9th c. Vatican Museums, 31448 (ex 119) (c) © Genevra Kornbluth [http://www.kornbluthphoto.com/OppianHillFresco.html]")
