Firmware: Android

[Kolsha]

Hey
I wonder, is it possible to create firmsoftware on android, to make it behave like AirTag.

At the moment I'm trying to experiment with android.bluetooth.le.BluetoothLeAdvertiser, but not sure that if it's right direction and it's capable of doing so.

Here is my snippet, any comments, guidances, ideas would be helpful.
Thanks!

// manufacturerData is similar to 
// https://github.com/positive-security/find-you/blob/ab7a3a9eaa4559d34fcdf37142729bef3ae38a36/Firmware/Microbit_v1/offline-finding/main.c#L32

        val settings = AdvertiseSettings.Builder()
            .setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_LOW_LATENCY)
            .setConnectable(false)
            .setTxPowerLevel(AdvertiseSettings.ADVERTISE_TX_POWER_HIGH)
            .build()

        val manufacturerData = createManufacturerData()
        val data: AdvertiseData = AdvertiseData.Builder()
            .setIncludeDeviceName(false)
            .addManufacturerData(0x004C, manufacturerData)
            .build()

        try {
            bluetoothLeAdvertiser?.startAdvertising(settings, data, advertiseCallback)
        } catch (e: Throwable) {
            Log.e(TAG, "SecurityException: ${e.message}")
        }