Optimizely & Google Analytics Cookie
Can Optimizely make a determination (or track) return visitors with Google Analytics cookies?
Thanks for answers!
Senior Digital Intelligence Analyst at SEM
Solved! Go to Solution.
Yes you can. You'll have to identify the cookie in Google Analytics and set the Audience condition to evaluate for this cookie. For more information on cookie audience conditions, see this KB article.
We've done this a couple times before so wanted to leave some notes:
Depending on if you're Universal Analytics or Classic Analytics you're looking for _ga or __utma-__utmz cookies. You can set that up like this: https://goo.gl/SOuHPV
First Pageview or More?
The GA cookies are also set AFTER the first pageview so you need a way to say "Still keep people in" or "Exclude those people".
For Example: The _ga cookie will be set *after* the first pageview so that person is technically not a new visit any more. The best way to combat this is to also add your experiment some way of identifying people who were already bucketed into your experiment by looking in the optimizely cookies! You can set that up by adding an OR condition to each of the 2x cookie conditions above: https://goo.gl/hK3mmt
We haven't ever done "first session" type targeting via GA cookies, but you could use an approach that was a combination of those above + writing a custom 30m cookie and check for it.
Hope that helps!