The fingerprint is a JSON file

Your fleet of agents needs to look like different people. Not different IPs: different humans. User-agent, viewport, geolocation, locale, timezone, screen size, the lot. Twenty profiles for twenty regions and device classes.

You write twenty JSON files into the container's storage/config/fingerprints/ directory. tokyo-pixel.json, lagos-android.json, oslo-macbook.json. Each one is a fingerprint profile.

When you start a browser, you pass fingerprintId: "lagos-android". The instance loads that profile as its launch defaults. Want to swap identity mid-flight? /stop, then /start with a different fingerprintId. Same container, same disk, different person.

The agent picks a profile the way a person picks a hat. The browser starts with that fingerprint, runs its task, and the profile is just a file on disk you can edit.

An identity used to be a configuration. Now it's a path.