Well, if the building is yours, you can mount the Opener next to the entrance directly onto the electric strike. You won’t have all features because there is no ring detection, but you can open through the App and if it is in BLE reach of people standing in front of the door also use Auto-Unlock, Keypad, Fob … It’s basically like mounting a Smart Lock to this door.
See the last paragraph in this PDF for more details:
… or mount a Nuki Box, which allows to easier share access with other parties living in the building (A box generates “virtual Smart Locks” for each party living in the building, which they can manage separately).