The Hardware Exploit
Modern laptops, tablets, and smartphones contain precise physical hardware: accelerometers and gyroscopes. Google Chrome includes a “Motion Sensors” API that allows websites to tap directly into this hardware. While intended for browser-based games or 360-degree videos, it is a massive privacy vulnerability. Malicious websites can use the gyroscope data to mathematically map the exact physical movements of your device, potentially logging keystrokes based on the micro-vibrations of your desk, or fingerprinting your specific hardware. To secure your physical hardware, you must completely paralyze this API.
How to Block Motion Sensors Globally
You can permanently sever the browser’s ability to read your accelerometer via the Site Settings.
- Open the Google Chrome desktop browser.
- Click the three vertical dots (⋮) in the top right corner and select Settings.
- In the left-hand sidebar, click on Privacy and security.
- In the main window, click on Site settings.
- Scroll down to the “Permissions” heading and click to expand Additional permissions.
- Click on Motion sensors.
- Under the “Default behavior” heading, select the radio button for “Don’t allow sites to use your device’s motion sensors.”
A Static Browser
The change takes effect instantly. Google Chrome will completely sever its internal connection to your motherboard’s gyroscope and accelerometer chips. The browser is now permanently blind to physical movement. If a website attempts to run a script to determine how your laptop is tilted or if your tablet is shaking, the API call will instantly return a null value. This guarantees that your physical environment and hardware movements cannot be tracked or exploited by untrusted code.