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A comment on What Do You Think about This Seamless “Registering/Login” User Experience?. Parent comment

Re:What Do You Think about This Seamless “Registering/Login”... by onlyrealcuzzo on Saturday November 02, 2019 @08:56PM (#21431275)
Serious question:

Why can't you use CSS to collect the user's email address? Can't CSS blend modes allow you to capture anything that's rendered on the page? Or is that not possible anymore?

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Re:What Do You Think about This Seamless “Registering/Login”... by judge2020 on Saturday November 02, 2019 @09:01PM (#21431290)
Looks like it's an iframe if I try by going to medium.com. I imagine getting the contents of an iframe would be a vulnerability and patched if it was a thing (I can't recall this being possible).
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