[Debonnys]

I did something similar, my gf wanted me text her that I got home safely after I left her place. So I automated it that when I disconnected to her WiFi and within a certain time reconnected to mine it would text her. She noticed it when she drove me back home once and still got the text.

[mabbo]

My wife and I simplified the "where are you" problem by turning on always-on location sharing in Google maps. Some people find it creepy, but as a couple of engineers we're pretty stoked on the efficiency improvement.

[eximius]

I'd still be creeped out. What if I want to go secretly shop for a gift?

[Klathmon]

I did the same thing, only at the time I had a wireless charger, so it was setup on my phone to send the text when it was after 8PM and I put my phone on the charger.

One night she stayed over, set the phone down, got the text, and thought it was hilarious and said she did think it was weird that I said the exact same thing every night.

The next day I updated it to pick from one of 10 different text messages!

[systemtest]

But what if the murderer took your phone and drove past your home?

[flatfilefan]

Was a fair game still. You were safe at home.