Don't trigger another switch press until a user opens their eyes

[gavinhenderson]

Is your feature request related to a problem? Please describe.
Currently if a user was to keep their eyes shut after a blink there would be a stream of switch presses. This is a problem if a user was to fall asleep for example.

Describe the solution you'd like
A way to only allow a new switch press action once your eyes have been opened again

Additional context
Email NG once this has been implemented

[willwade]

• Can we implement a "No repeat" option? So one shut leads to one keypress
• Or/And a debounce setting e.g. "Do not allow switch press within n ms"