Changing language on the mirror dynamically based on facial recognition

[Agurkmix]

Hi there.

So I am currently working on a magic mirror to have in my home.

We are visited by my girlfriends parents every year who are Chinese.
Since they only speak Chinese I would like to assist them with a mirror they can look in to see the weather, public transport etc.

The only issue I am having is to change the language on the mirror on the fly.

I want to set in facial recognition, so that when one of the parents stand in front of it it shows Chinese translation, but for the rest it is English.

Is this possible to do smoothly without restarting the whole mirror?