In case anyone wants to know how this should work, this is the explanation by the minister:
There are "technical possibilities where software can run on the backend that can immediately identify: Does the registered mobile phone number match the name and address or not?" - derstandard.at/2000101678440/Minister-Bluemels-Ominous-De-Anonymization-Software
(from https://derstandard.at/2000101678440/Minister-Bluemels-Omino...)
Translating it as "backend" is very friendly as he literally said "a software in the rear end".
There are "technical possibilities where software can run on the backend that can immediately identify: Does the registered mobile phone number match the name and address or not?" - derstandard.at/2000101678440/Minister-Bluemels-Ominous-De-Anonymization-Software (from https://derstandard.at/2000101678440/Minister-Bluemels-Omino...)
Translating it as "backend" is very friendly as he literally said "a software in the rear end".