How to read this page

What does “checked in” prove?

Sending one takes the sender's phone — a phone that unlocks with the sender's face or passcode — and a deliberate tap in the Pulse app. Pulse vouches for the phone and that act; it can't see how anyone is feeling.

Where do the green checks come from?

Each line is something the phone itself reported at that moment — its motion, its air pressure, its daily rhythm. The sender picks what to share, but can't edit what the phone said.

How exact is the map?

The pin marks the middle of an area about a kilometer wide. The exact spot never leaves the phone — not to this page, not to Pulse.

What does the weather line mean?

The phone fetches the local weather and compares it with its own air-pressure sensor. When they agree, that's one more sign the phone is really in that area.

Why does the link expire?

A check-in is a moment, not a feed. When this one ends, ask for a fresh one — a new check-in is worth more than an old page.

What if I'm worried?

Call, or ask someone nearby to look in. This page is a comfort, not a guarantee — it should never be your only step.