[matheusmoreira]

> It also really throws into sharp relief questions around things like device ownership.

There's no question about it: it's not ownership if the user doesn't have the keys to the device. The purpose of this technology is to ensure users can't run unauthorized software. Whoever authorizes the software is the true owner of the machine.

There are legitimate applications for this. Whether it's empowering for the user or not depends on how it's implemented. If people can use their own keys to sign the software they trust, it's fine. If they can disable the security, it's fine.

It's a problem when software is authorized by corporations or governments. That means the users of the machine are merely guests who are allowed to use the hardware provided they follow the rules. This is the true purpose of this technology, regardless of any potential benefits for users. The multi-billion dollar copyright industry would love it if this was the default for all computers. It's the only way they can guarantee the artificial scarcity of copyrighted works in the 21st century. Governments would really like to regulate software as well: encryption is far too powerful, it has the potential to frustrate even intelligence agencies and they can't deal with the fact civilians have free access to it.