My iPhone knows when I'm walking, when I'm biking, when I've shook it.... But there's one event that it doesn't detect.

I want to be able to trigger an action when I set my phone down. That's got to be straightforward. It might have to pause for a second or two, but it's got to be straightforward.

And in fact, if it knows I have an Apple Watch, it can trigger it when it realizes I'm walking away from the phone.

The action that I want to associate with that event is also straightforward.

Either a customized beep, even if the phone is silenced. Or speaking a phrase. Which for me would probably be something like, "Please remember where the fuck you just put me!"