Shelly BLU Button 1 as Arrival Sensor

Is it possible to use Shelly BLU Button 1 as Encrypted Arrival Sensor.
I know, BLE Beacon could be enabled and could be used as Arrival Sensor.
But BLE Beacons are not secured at all and could be cloned even without
physical access to the device.
I am planning to use an Arrival Sensor for automatic door opening.
So, security for this application is very important.