Originally posted by Insane Titan
Why are you ignoring the fact Thanos himself says it's Keyes to his power signature?He created the machine so he knows more than Moodragon.
Simply put he never matched Thanos power therefore it gives no hint of a power up.
Using that rationale any character that possessed cosmic power would have been able to unlock the device, which would not make it a failsafe at all. Thanos keyed it specifically so that only he could activate and operate it. I find your position an illogical interpretation of the scans. It's not as simple as anyone possessing cosmic power being able to operate the machine.
*edit
I'm actually at work now so I don't have access to my comics to produce more scans to support my position at the moment, so I'll post some more to substantiate my position on Annihilation when I get home.