Hello George Baily, I found this on Product Hunt a few weeks ago and I think they use MTurk for customer feedbacks, hope this is helpful!
Hi Vishrut, thanks for asking such a great question!
You’re right in that there are actually users who just use their phones to set alarms. I see two scenarios that the alarms wouldn’t work so well:
1) when trains deviate from their usual schedule
2) when the user deviates from their usual schedule