Hacker News·4 min read·hard
How Bluesky draws its logo on screenshots
G
gavide✦AI Summary
A developer investigates how the Bluesky app dynamically inserts its logo into screenshots by exploiting iOS privacy features. The app uses a secure text entry field that masks content during screenshot capture, allowing the logo to appear only in the resulting image.
Sometimes I take a screenshot of a post I like, either to send it to friends/meme channel or to save a “durable” copy. Like this one (I’ve cropped out the rest of the interface):
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