Is technology used for identifying voters at polling stations (electronic poll books)?

South Korea, [Public Official Election Act], Act No. 4739, March 16, 1994 (last amended Act No. 14839, July 26, 2017), accessed 30 September 2018

Article 157 (Procedure for Receiving and Recording Ballot Papers)

(1) An elector shall go, in person, to a polling station, and shall present his/her resident registration card (referring to a certificate with a photograph attached thereto, which is issued by a government office or public agency, such as a passport, driver's license or public official identification card, or other identification cards prescribed by Regulations of the National Election Commission, to identify such person, if the person does not have a resident registration card; hereinafter referred to as "identification card") in the presence of voting witnesses, and shall, after the identification is confirmed, affix his/her signature or seal or thumbmark to the electoral register, and then shall receive a ballot paper. […]