Detect device lock on apple watch

Hi anybody figured out how to detect if the device gets locked ? The purpose would be to remove sensitive stuff on events where the user removes the watch from the wrist.

i know it may be late and you figured it all out on your own but i think at WWDC 2015 we were told to use didDeactivate() function to handle events in case of interface controller disapearing so when user goes back to the view it is a clean sleight you can also use applicationWillResignActive() method in app delegate if the app itself is handling sencitive data.

Detect device lock on apple watch
 
 
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