Hello,
I work for a company that uses cookies to do audience measurement on different websites.
I read the Webkit ITP article from John Wilander:
https://webkit.org/blog/7675/intelligent-tracking-prevention/,
and now, I try to see if the cookies of our websites are really not usable anymore 24 hours after the last interaction.
This is the scenario I do:
- Day 0: visit Tracking.com website install "Identify" cookie (as first party cookie)
- Day 0 + 1h: visit Website.com for which we measure audience, 3rd party "Identify" cookie is well sent to Tracking.com
"Do nothing with the browser in between"
- Day 0 + 36h: visit again Website.com, 3rd party "Identify" cookie is still correctly sent to Tracking.com.
According to ITP specification, I was expecting the cookie to be not sent since I didn't interact with Tracking.com for more than 24 hours.
Is it because ITP doesn't classify Tracking.com as having the ability to track the user cross-site?
How can I be sure that ITP will not prevent the measurement to be used at some point?
Thanks for your help,
Loïc