Tuesday, July 18, 2017 [Tweets] [Favorites]

How Paywalled Sites Permit Access to Visitors From Social Media Sites and Apps

Isoroku Yamamoto (via Hacker News):

However, subscription-based publications face a problem when users click on a link through Twitter or Facebook on a mobile device. Social media apps implement their own in-app browser, which generally do not retain cookies. Websites that require a user login must request the login every time the app is reopened.

This makes for a cumbersome user experience. Thus, publications like the Wall Street Journal disable login checks when a page request appears to come from Twitter.

It does this by inspecting HTTP request headers. The important headers are Referer and User-Agent.

Previously: Publishers and the Pursuit of the Past.

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