Caveats:
- Your computer needs TPM 2 in the hardware (most modern devices have this).
- This only works with websites that support this feature.
- It's still in the experimental stages.
- If you already have session-hijacking malware on your computer, this might not work (it depends on the malware).
- This protection not a guarantee, but it's a good idea nevertheless.
- This appears to be implemented on desktops and laptops, but not (as far as I know) on any of the small devices (Android, iOS, etc.).