They are using KYC procedure.
Know your customer, alternatively known as know your client or simply KYC, is the process of a business verifying the identity of its clients and assessing their suitability, along with the potential risks of illegal intentions towards the business relationship. The term is also used to refer to the bank regulations and anti-money laundering regulations which govern these activities. Know your customer processes are also employed by companies of all sizes for the purpose of ensuring their proposed customers, agents, consultants, or distributors are anti-bribery compliant. Banks, insurers, export creditors and other financial institutions are increasingly demanding that customers provide detailed due diligence information.
One of the following documents is required:
EU driving licence
National identity card
Military identity card
Temporary identity card
Permanent residence card
Refugee travel document
Residence permit
Immigration visa