>>reacto+1
It looks very similar to the “secure boot” mechanisms in Windows and other commercial client OS.
Strikes me as very dangerous though on the web where there are so many paths for malware to get in and this could get in the way of plugging the holes.
>>PaulHo+W2
It was also dangerous for your PC: as soon as people ceded the ability to led their parties control what we run on our devices--such as by "only firmware signed by Apple can run on my phone"--we lost this war.