Observed arrival · 2026-10-20
tenshi: a dead-man’s switch for a night out
A demo for timed check-ins during a night out, with trusted contacts and a PIN to cancel an alarm.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People checking in during nights out
- Worth noticing
- The setup includes an optional backup contact, a “home by” time, and a PIN for canceling an alarm.
Field notes
The setup asks for a trusted contact, optional backup number, check-in interval, optional “home by” time, and a cancellation PIN. The page also describes adapting check-in frequency to response speed and using battery-fall estimates to warn before a phone dies; it says contacts can distinguish a still-on phone from one that went dark with low battery. The extracted homepage does not establish whether the form is connected to a live service.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue