Jolanda Verhoef

Welcome back to the blog post series "Build intelligent Android apps" where we take a basic Android app and transform it into a personalized, intelligent, and agentic experience.

Jetpacker is a technical showcase app that our team built from the ground up for this year's Google I/O (built using Antigravity). At its core, Jetpacker helps users plan, explore, and enjoy their next big adventure.

In this post, we’ll dive into something a bit more visually engaging — implementing a spotlight effect on top of our camera preview, using face detection as the basis for the effect.