What part of the 5th Amendment doesn't this guy get? A judge can attempt to compel one to testify, one invokes the 5th and a stand-off ensues. Then, at worst, you get held indefinitely for contempt. I'm okay with that. You still won't get my encryption keys and good luck with the devices.
So far, we are not legally required to have government mandated back doors. Perhaps that will happen, someday. Even should that come to pass, I can design and build my devices from scratch, and thus the stand-off would continue as I still won't give you access, Mr. Comey. What part of engineer don't you understand? Guess what type of systems get my attention these days?