This free open-source app regularly publishes to a configurable MQTT topic whenever connected to a given Wi-Fi network or in proximity to a Bluetooth beacon. It can be used to integrate the presence of your phone in home automation. The app uses the AndroidX WorkManager library, so notifications are sent even if the phone is in stand-by. In addition to regularly scheduled checks, the app also reacts to changes in the network connection. The MQTT client supports anonymous and username / password authentication as well as client certificate authentication. For more details on how to configure certificate-based authentication, please have a look at <a href="https://github.com/ostrya/PresencePublisher/blob/main/README.md">https://github.com/ostrya/PresencePublisher/blob/main/README.md</a>. Note that the data you choose to publish is sent only to the server of your choice. The app does not send any data to me or any other third party. If you want to know more about how this app processes your location data, please have a look at the privacy policy at <a href="https://ostrya.github.io/PresencePublisher/en/PRIVACY_POLICY.html">https://ostrya.github.io/PresencePublisher/en/PRIVACY_POLICY.html</a>. <b>Permissions</b> • ACCESS_BACKGROUND_LOCATION: on Android 10+, necessary to retrieve name of connected Wi-Fi while running in background • ACCESS_FINE_LOCATION: necessary to discover beacons; on Android 9+, necessary to retrieve name of connected Wi-Fi • ACCESS_NETWORK_STATE: necessary to register network change listener • ACCESS_WIFI_STATE: necessary to retrieve SSID of connected Wi-Fi • BLUETOOTH: necessary up to Android 11 to communicate with beacons • BLUETOOTH_ADMIN: necessary up to Android 11 to discover beacons • BLUETOOTH_CONNECT: on Android 12+, necessary to read beacon names • BLUETOOTH_SCAN: on Android 12+, necessary to discover beacons • FOREGROUND_SERVICE: on Android 9+, necessary to run the app reliably • FOREGROUND_SERVICE_DATA_SYNC: on Android 14+, necessar