IP video intercom system - DOORBIRD D2101V - Practical?

The planning of the new building continues, now the topic of video intercom system:

1. What do you think about an IP video intercom system?

2. What do you think about the Doorbird D2101V, is there possibly even any experience with the system?

3. What is the difference compared to other intercom systems?

Thanks in advance for your feedback! :-)

Can you briefly show how you want to use this system? I think depending on the usage, different systems are recommended.

Cell phone, tablet, fingerprint scan, RFID/NFC, KNX, third-party systems, telephone system, etc.

I would like:

- Use of the system via my mobile phone
- Finger scan in the door or in this system
- good value for money
- the system Wired not connected to other systems

None of you know Doorbird??