Very cool.

This is very similar to an old concept of mine ( which would have used a single selonoid for locking ) in 2012 : https://www.youtube.com/watch?v=EoPj...MgSIqNRqNYzh6w
And that idea was based on one by Ezra from Trinitylabs.
But never had time to go as far with it as you did.

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