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

Slovak Republic, Act on the Conditions of Electoral Law and change and completion of certain laws (2014, as amended in 2015)

Section 24. Method of voting

(2) After entering a polling station, an elector shall prove his or her identity by his ID card or by any other officially issued document which encompasses the photography of elector and all personal information about the elector which are listed in the registry of electors. The polling district commission shall then circle the consecutive number of the elector in the electoral registry and give the elector the ballot papers and an empty envelope. The elector shall confirm the acceptance of ballot papers and envelopes by his signature; if he is not able to confirm the acceptance by his signature the chairman of district polling commission shall note this fact into the registry of electors. An elector who does not show his or her identity card until the end of polling shall not be allowed to vote. The same shall apply also for the voting outside of polling station. In the case of an elector who is accused or sentenced for a crime, the elector shall prove his identity by the card of accused, or the card of the sentenced, or by the testimony of two members of Penitentiary and Justiciary Force present at the Institution where the polling takes place.