, 9 tweets, 5 min read Read on Twitter
We studied how users interact with different version of🍪 consent notices (aka #cookiebanners). Most people avoid making a choice regarding cookies and if they have to explicitly enable them (opt-in) the majority won't do it. Here is a short summary of our results. Thread:
We first checked what notices look like on websites. A large majority do not offer choices, but instead only ask for confirmation - which is mostly not ok according to #GDPR. See for example the ICO guidelines ico.org.uk/for-organisati…
In three studies we then tested different versions of cookie consent notices on a german e-commerce website, checked how users interacted with them and asked them to participate in a survey afterwards.
1. Position: Dialogs in the lower (left) part of the screen get the most attention. Given a binary choice more people accept cookies, but a survey of participants showed that some fear the website will not work or redirect them if they refuse to accept cookies.
2. Number of Choices: When given more complex choices (e.g. opt-int to categories of cookies) most users won't allow them. But if checkboxes are pre-selected ("nuding to accpet" aka "dark pattern"), most will accept the default.
We asked @CookiebotCybot to verify the results for this part of the study. While our data set (with only German users) shows that only 0.16% of them would accept all types of cookies, Cookiebots larger data showed 5,6% accepting everything. Still very low.
3. Text: Cookies have a bad reputation. When notices describe their "use of cookies" more users reject them compared to notices that describe the "use of personal data".
It seems that websites with #GDPR compliant consent notices regarding cookies will have a hard time tracking their users! That's why most use nudges and dark patterns to make users accept cookies.
The study was accepted for publication at @acm_ccs later this year. Work with Christine Utz, @thorstenholz @sascha_fahl and @floschaub. Thanks for support! @CookiebotCybot @CybotCorp
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