Deaf ears cannot be matched visually
Latest call to halt creepy tech likely to fall on deaf ears
Of course it will be ignored. The tech requires visual recognition and not listening to anything you say. If you want someone to listen, then you need an integrated Siri/Alexa/Google. However, then the NHS may want to have a say in that too because they ensured that no private information would be exposed while listening to the criminalspatients.
Or, maybe, just maybe, the ones who should be listening, already have appointments with NHS personnel to have their heads checked out. You may simply ask Alexa for their whereabouts. No need to use facial recognition.