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Screensafe: A Technical Chronicle Of On-device AI And Privacy-first...
The Problem: Cloud-based moderation violates privacy, but on-device AI hits hostile OS limits—specifically the iOS Share Extension memory ceiling (120MB) and Android's Binder IPC limit (1MB).
The Solution: We architected the "Courier Pattern" (using App Groups and Deep Links) to bypass iOS memory kills and implemented URI streaming to circumvent Android transaction limits.
The Result: ScreenSafe achieves 100% offline, privacy-first redaction with real-time latency (30-100ms) by integrating the C++ Cactus framework directly into React Native.
Source: HackerNoon
