Fingerprint Protection Beta

What does fingerprint protection do?

Websites can recognise a device from the details a browser reveals: how it draws an image, which graphics card it reports, how it processes audio, which fonts it has, its screen size, its browser identity, its time zone and language. Fingerprint protection gives a profile its own consistent set of those details.

The device profile is derived from the profile itself, so it stays the same across restarts and every page in that profile sees the same machine. A different profile gets a different one.

How do I turn it on?

Open the profile manager, then either right-click a profile and choose Fingerprint, or use the fingerprint button on the profile's row. In the Fingerprint Protection window, tick Enable fingerprint protection and pick a level.

• •Balanced (recommended): subtle canvas and audio changes, on-page size measurements and browser identity; leaves the graphics card, fonts and computer details alone
• •Maximum: everything Balanced covers plus the graphics card, fonts, screen and computer details, with canvas and audio at the aggressive level
• •Custom: choose each setting yourself in the sections below
• •None: nothing is changed

Whenever you turn it on in the app, MetaDock shows a short notice about what it does and its limits. Basic per-profile device emulation stays available either way.

What can it change?

The window is split into Overview, Hardware, Canvas & Audio, Identity and Location.

• •Emulated platform: Windows, macOS or Linux, kept consistent with everything below
• •Graphics card: report a different GPU, picked from a list of current and older named cards
• •Computer details: screen size, processor and memory information
• •Drawn images (canvas): small changes to canvas measurements, at a subtle, moderate or aggressive level
• •Audio: small changes to audio measurements, at the same three levels
• •On-page size measurements: slight randomisation of measured element sizes
• •Fonts: report only standard system fonts
• •Browser identity: the User-Agent and Client Hints, following the profile's own User-Agent or a custom one

Can it change location, time zone and language?

Yes, from the Location section. Choose a source:

• •Auto: looks up the profile's proxy address in a local IP database on your machine (a proxy given as a hostname is resolved through DNS first), then sets matching coordinates and a time zone; a rotating proxy's exit address may differ from the one it resolves
• •Manual: enter latitude, longitude, a time zone such as America/New_York, and a language such as en-US

Advanced: can I keep or rotate the device profile?

• •Stable by default: the device profile is derived from the profile name, so it survives restarts
• •Custom seed: enter your own seed to pin a specific device profile
• •Rotate on every page load: draw a new device profile for each page instead

Can I control it from scripts or AI tools?

Yes, on MetaDock Pro. The same settings are reachable over REST, WebSocket, WebDriver and MCP: get, set and clear a browser's fingerprint configuration, set canvas, WebGL and audio separately, list the named graphics cards, and set or clear location. Claude, Cursor or the built-in AI assistant can use them like any other MCP tool.

Good to know

• •Not a guarantee: this is profile separation and privacy, not a promise that a site cannot tell profiles apart; sites may still detect a modified fingerprint and act on it
• •Your responsibility: you remain responsible for complying with the terms of any website or service you use it with, and with the law where you are
• •Some sites may behave differently: if a site misbehaves in a protected profile, try Balanced or turn protection off for that profile
• •Pairs with the adblocker: the built-in adblocker also drops known fingerprinting scripts before they run