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Re:Gemini PDA: 20 years on, meet the all-new Psion Series 5 by giobox on Thursday November 30, 2017 @09:26PM (#15821465)
It's never a Psion without that sweet spring-loaded hinge design they developed to contain the double A batteries on most of their PDAs, variations of which were used on the great 3 and 5 series.

It was oddly satisfying just playing with the mechanism, easily one of the most over-engineered parts I've seen on a clamshell style computer.

Re:Gemini PDA: 20 years on, meet the all-new Psion Series 5 by bestham on Friday December 01, 2017 @01:54AM (#15822407)
It was awesome. I’ve worn out a Revo playing with that. But the most over engineered hinge design IMHO have to be the IBM butterfly keyboard on the Thinkpad 701.