The author discovered that Bluesky hides its UI (e.g., a Follow button) from screenshots by using a clever iOS technique via the expo-privacy-sensitive package. It renders content inside a secure UITextField whose layer gets blanked by iOS during screenshot capture, revealing a hidden Bluesky logo instead.
Background
Bluesky has open-sourced parts of its app code, making it possible to audit features like this screenshot-masking behavior. The technique exploits iOS's automatic blanking of secure text fields during screen capture.
- Source
- Lobsters
- Published
- Aug 18, 2026 at 05:46 AM
- Score
- 6.0 / 10