IT does nothing
Response from developer
The system is based on geofencing so it knows you're not at home so there's no need for face detection. Not sure what seems to be the issue here, but support at alarmhandler dot com can help you get going :)

Transform old phones into a cohesive security system. Integrate SMS alarms, IP cameras, and existing devices into one controllable platform. Offers affordable, DIY security solutions.
1.1
November 13, 2022
Updated to work with Alarmhandler 4.0 Easy to add old phones as cameras to the main Alarmhandler app using QR code
The system is based on geofencing so it knows you're not at home so there's no need for face detection. Not sure what seems to be the issue here, but support at alarmhandler dot com can help you get going :)
Download the Alarmhandler Sensor app on your old device and launch it to display a QR code. Then, download the main Alarmhandler app on your regular phone, add a new sensor of type 'Old phone', and scan the QR code. Finally, tap 'Start' on the sensor app to begin camera surveillance.
The app is supported on iPhone and iPod devices. It requires the old phone to be connected to the internet via Wifi or GSM and permanently connected to power.
Alarmhandler Sensor is available for free. There are no in-app purchases or advertisements mentioned.
The app was last updated on November 13, 2022, with version 1.1. The developer mentions publishing frequent updates.
Alarmhandler Sensor has an age rating of 4+, making it suitable for a wide range of users.
No, Alarmhandler Sensor does not contain advertisements. The app is free to use without any ad interruptions.
As of the latest data, Alarmhandler Sensor has a rating of 1.0 stars from 1 rating. This indicates a very limited number of user reviews.
Yes, the app is designed to integrate IP cameras along with SMS-based alarm systems and old phones into a cohesive security system.