You need a valid official photo ID.
From 01/01/2019, it would be a good idea to have an ID card with you when you buy a prepaid SIM card.
That is possible for users of B.free prepaid cards.
Naturally, we will handle your data very carefully and properly in accordance with the terms of the EU-GDPR legislation.
Further information is available at
Yes, you can pass on or transfer a prepaid SIM card registered in your name to another user. In this case, the card has to be registered in the name of the new user, i.e. the card needs to be transferred.
The transfer to a new user can be done online or anywhere else where it is possible to register.