Continuous authentication tech could help companies in multiple ways, such as ensuring that if a laptop was stolen while unlocked, it would still be impossible for anyone to access sensitive systems if their biometrics didn’t align.

We've had solutions to the "laptop stolen when unlocked" problems for years. BusKill uses a cable that you clip to your belt for this. It's simple. You don't need to film your employees all day long to solve this problem.

If the connection between you to your computer is severed, then your device will lock, shutdown, or shred its encryption keys -- thus keeping your encrypted data safe from thieves that steal your device.

I doubt frying the motherboard would have any impact on the irrecoverability of the data on the disk. If you want to do this properly, we have an anti-forensics "self-destruct" trigger that wipes the FDE (encryption keys from the) LUKS header:

• https://www.buskill.in/luks-self-destruct/