Google unveiled Gemini Spark and Android Halo at Google I/O 2026, promising a shift from single-purpose bots to a proactive agentic AI that completes tasks in the background without user interaction. Android Halo, slated to arrive later this year, rethinks mobile AI by living in a dedicated, persistent zone at the top of the phone screen instead of hijacking the full screen with a chatbot interface. It shows a subtle visual indicator of an AI agent’s progress and allows users to answer clarifying questions or grant permission with a single tap without leaving the current app. The author expresses excitement about the productivity leap and seeing science fiction become reality, but also unease about privacy and control over devices, questioning whether the productivity boost is worth giving an AI agent deeper access to personal data.