I was going to say the same thing, but then the article says:

> For that reason, the warrant authorizes the seizure of ‘passwords, encryption keys, and other access devices that may be necessary to access the device,’” the document read.

So the "power off the device, now it's a password" seems to be something they were prepared for. The article is unclear as to whether or not this was granted, but if so it'd be seemingly unprecedented.