Joyway Alarm app requires these permissions:

1, Bluetooth
The app connects device by bluetooth, calculates rough distance via bluetooth signal strength, triggers device lost and found event.

2, Location and Background location
If user turned on location feature, the app will record location when lost or found event is triggered, user can review event history. The app can record location data even if running in background.

3, Camera
User can change device's avatar by taking photo or choose picture from photo album. User can remotely control phone to take picture by clicking device button.

4, Photo album
User can choose photo to change device's avatar, and save photo when selfie.

5, Send SMS
When user enabled SOS feature and setup receivers' numbers, the app can send SMS to target when user double click or long press device button. The SMS message will provide a url so that receiver is able to open web browser to view sender's location in google map.