Apple Shortcut Controls run in the background and will run with the screen locked.
Setting up a Apple Shortcut for a Livekey Item or Routine:
Step 1: Open the Shortcuts app on any iOS device that has LiveKey installed on it
Step 2: Select the '+' in the upper left to add a new Shortcut
Step 3: Select '+ Add Action'
Step 4: Switch the toggle from 'Categories' to 'Apps', then select LiveKey
Step 5: Select the LiveKey item category
Step 6: Select 'Choose' for both the Items and Actions selections
Step 7: Give your New Shortcut a name. This name is the phrase that Siri will respond to.
Step 8: Select your shortcut to run the LiveKey action or ask Siri to do it for you.