Is the biometric data used in voter identification at polling stations?

Folketing (Parliamentary) Elections Act (Consolidated Act No. 369 of 10 April 2014)

47.-(1) The right to vote is exercised by personal appearance at the polling station. Before voting a voter must turn over his or her poll card to the keeper of the electoral register. Where a voter has omitted to bring his or her poll card a new one shall be written out. The keeper of the electoral register shall demand that the voter states his/her date of birth. Additonally, the voter shall give his or her name and address upon request. In case of doubt about the identity of a voter, the identity must be proven, if necessary through production of documentation thereof. Then, and after the keeper of the electoral register has ticked off the voter’s name in the electoral register, the voter is handed a ballot paper.