[beachy]

One thing that springs to mind is a monitor for predator (pest animal) traps in remote bush regions. The system spends most of its time asleep, and is woken and starts consuming power only when a PIR sensor is triggered from a visiting animal's body heat.

Then the battery-sapping stuff happens to analyse video and differentiate between target and non-target species and finally trigger the trap or go back to sleep.

A system like this would be an ecological game changer in my country.

[moffkalast]

The animal would probably be long gone by the time this thing boots and loads the model.

[gardnr]

It’s got a low power mode where it can still do some processing: https://youtube.com/watch?v=hS-NiaGeeVA

[beachy]

Not sure about that, but animals are cautious and will usually interact with a baited trap for some minutes.