The article says that. The need for a uninterceptable interrupt to reach the OS login screen is obvious. The mistake was making it a three-key chord rather th

The article says that. The need for a uninterceptable interrupt to reach the OS login screen is obvious. The mistake was making it a three-key chord rather than something simpler. Compare to the single home button on iOS devices, which also goes straight to the OS and can't be intercepted by user space programs.