How Lanturne works

This page has the details behind each feature, for when you're using Lanturne. For a quick overview, see Everything Lanturne does.

What the watch tracks

• Whether it's being worn. The watch uses skin contact and pulse together. A real pulse reading counts for more than the skin sensor.
• Pulse, about every fifteen minutes, when the watch can read it.
• Steps, from the watch's daily total.
• Battery. Each time the battery drops to 25%, your phone gets one low-battery notice. The notice goes away at 50%.
• Its own settings. Thirteen settings have to stay on. Your phone only shows you one when it's wrong.
• Where it last reported from. We keep only the latest position. Each new one replaces the one before.

When the watch is offline

• It saves up to two hundred events on the watch, and keeps them encrypted.
• It sends them as soon as it's back online.
• It tells the wearer out loud when it loses its connection.
• It never deletes an emergency to make room. Everyday events go first.
• An event that gets sent again never shows up twice.

What you see on your phone

• The answer comes first. You see either what needs you, or "Nothing needed your attention. The watch last reported 2 min ago."
• Six tiles: last check-in, watch battery, wrist, last seen, check-in time and last pulse.
• The wrist tile says On, Off or Not known. Off shows in red.
• A message when something on the watch needs fixing. It says what's wrong and what to do.
• A message when your own phone can't sound an alert. It has a link to the setting.
• The past six days at a glance, and recent events with the most important first.
• The last known location on a map.
• It updates every thirty seconds while it's open, and each time you come back to it.

When an alert comes in

• It fills the screen and makes a sound, even on Do Not Disturb, once you allow it. The app asks you during setup. You can also find it under Settings, Do Not Disturb.
• Your phone reads it out loud on the alarm channel.
• The alert says what happened, when and where. It also gives the pulse if there is one.
• A Call 911 button opens your phone's dialer with 911 typed in.
• It repeats until someone answers, for up to two hours. The repeats come less often as time goes on.
• Acknowledging it stops it for everyone. It stays on your screen until you mark it resolved.
• When our servers raise an alert, it includes the last known location and when it was taken.

Your emergency contact

• You can add one person for free. They don't need their own subscription.
• They get the alert only if you haven't answered. You set the delay, from two to thirty minutes.
• You still get every alert.
• Either of you can close it. Whoever marks it handled first stops it for both of you.
• They see the alert and nothing else. They don't see history, check-ins, battery, settings or past days.
• They get one email when you add them. It says who added them and where to get the app.
• If you remove them, the app asks you to confirm.

The record

• History by day, with the newest first and older days folded up.
• Press and hold an event to hide it. It still stays in the record you can download.
• Tap any event to see its map, pulse and battery.
• A full report for any dates you pick. It shows the days covered, check-ins, missed check-ins, SOS presses, falls, alerts, and each day's heart-rate range.
• Save it as a PDF and share it from your phone.

What you can set

• The check-in time, on the hour, between 7:00 AM and 11:00 AM.
• Four wait times, each from five minutes to twelve hours. They are for a missed check-in, a quiet watch, a watch that is worn with no pulse, and no movement.
• Their name, pronouns and time zone. Lanturne asks for pronouns, never gender.
• Do Not Disturb access, and which phone gets alerts.
• Your subscription, which you manage in Google Play.
• Deleting your account. It's all in one place, with a clear list of what gets deleted.

Privacy

• We keep only where they are now, not where they've been. We keep one last known location and replace it each time a new one comes in.
• We keep a location only for a HELP press, a fall or the daily check-in.
• The watch can only send. It can't read anything about you, and it never shows your name.
• We don't sell data. We don't share it with advertisers or data brokers. We run no ads and no third-party tracking.
• We use the pulse for one thing: to know whether someone is wearing the watch.
• You can delete everything from the app, or ask us to do it. The delete your account page lists what gets deleted.

Security

• Your account and the watch have different permissions. Your account can read and manage. The watch can only add events.
• Only you can pair or unpair a watch.
• We store watch keys and pairing codes in scrambled form.
• Sign-ins expire quickly and renew on their own in the background.
• If you delete your account, the watch finds out and shows a new pairing code.
• We never see your card. Google Play handles payment.

What keeps it running

• We log every alert before we send it, so it can't be sent twice or get lost.
• An error never closes the app.
• Our servers check every minute.
• We back up the database every night.

Questions? Use the contact form at lanturne.com/contact. A person reads every message.

Lanturne is not a medical device and not an emergency service. It sends alerts to you and your emergency contact, and it does not contact emergency services.