@khanjicyber: A developer’s Bluetooth headphones kept refusing to switch between his computer and his phone, and the only common factor was an open AliExpress tab. When he dug into the code, he found hidden scripts running silent audio at zero volume, measuring how his hardware processed a signal he couldn’t hear, and folding that into a device fingerprint. No cookies, no browsing history, just the physical machine itself. The only reason anyone knows is that it accidentally broke his Bluetooth, and the technique itself is far more common across the internet than one shopping site. I’ve shared one thing you can do about it in the video, and there are more easy protections most people have never touched, which is Part 2. Follow so you don’t miss it, and send this to the mate who’s always blaming Bluetooth.