Correct me if I'm wrong, but all these lock-thingies will be slight bumps in the road for someone really interested in the data on your phone. Direct access to the flash chips is all you need. They only viable solution is encryption. What's the reason the Jolla doesn't use that, ootb?

While I'm not really into flashing custom kernels (my N9 runs stock kernel) I do find it disappointing to see I now have yet another device which is hard to hack, or at least harder to hack for the wrong reasons (i.e. trying to improve security, but ultimately failing at that. Just like my Samsung tv, which encrypts recording but helpfully puts the keys in a companion file.)

It might not affect many, but these kind of changes on a bug-fix update which will seriously hinder owner's ability to hack a supposedly open device should be noted in the release notes of that update.