I remember setting geofenced reminders maybe even 10 years ago ("remind me X when I'm near the supermarket") and they were pretty cool but sat squarely in that

I remember setting geofenced reminders maybe even 10 years ago ("remind me X when I'm near the supermarket") and they were pretty cool but sat squarely in that zone where they were useful enough to be interesting but not reliable enough that you could count on them (the number of times I got a reminder 5 minutes after I left a place was a lot) - so the applications where you could seriously use them sat in a very narrow band. This is probably one of a litany of missed opportunities I see where specifically Google missed the boat around 2010 - 2015. So much of what we have today they were already rolling out on phones as smart features ("Google Now" etc), and somehow it all faltered or even went backwards (I could reliably in set reminders by voice in 2013 I think, but by 2018 they were so unreliable I gave up). What I don't understand here is how they are going to do all this tracking and ambient AI without destroying your phone battery. I'm surprised Apple especially will even allow a background process to run that is doing that much.