Add PIR Sensor/Button to turn Display Backlight on/off. save power when no human looks at

[Meins321]

Hello everyone,

i wanted to ask if it is possible to add a pir sensor/button in fron of the rpi display to turn the display on if the user comes up to the display to look on it?

i do own some cheap onfiv cameras with sd cards in them where i want a custom display added on the otherwise useless stream to check out its view or if someone approaches the front door...

thank you for your time and effort