If electoral register is created by the EMB, what type of technology used for collecting registration data?

Romania, ODIHR, Needs Assessment Mission Report, Presidential Election, 10 November 2019, accessed 8 December 2019

“The PEA has overall responsibility for management of the permanent and centralized electoral register, which is based on a compilation of information from various state authorities, including the National Register of Persons’ Records and maintained by the Ministry of Interior.”