Klarna, a global Buy Now, Pay Later provider and shopping assistant, has introduced "Sign in with Klarna" to streamline the online shopping experience while granting consumers more control over their data. 

Available in 23 countries including the USA, UK, Germany, and France, the service expedites the checkout process and unlocks personalised offers from merchants upon consumer consent.

What’s most interesting about it, for us at least, is its implications for a cookie death solution using affiliate marketing. 

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