Behind the Scenes: How We Built Screen Recording Prevention
When we launched Fancall, one of the most common concerns from creators was simple: "Can someone record my call?" It's a valid fear — leaked content can damage reputations, violate privacy, and erode trust. We decided to solve this at a technical level, not just a policy level.
Building screen recording prevention required deep integration with both Android and iOS. On Android, we use a combination of FLAG_SECURE and custom surface rendering techniques that prevent the OS from capturing the screen during active calls. On iOS, we leverage system-level APIs that detect and block screen recording and mirroring while a call is in progress.
The implementation wasn't straightforward. We had to handle edge cases like split-screen multitasking, accessibility overlays, and different OEM implementations of Android. We tested across hundreds of device models to ensure the protection works reliably. When a recording attempt is detected, the screen goes black for the recorder while the call continues normally for both participants.
This feature, combined with our policy of never recording, storing, or monitoring calls, means conversations on Fancall are truly private. Creators can be themselves. Fans can speak freely. And both parties know their conversation stays between them. Privacy isn't a feature we added — it's the foundation we built on.
