There are 2 different ways to sign in; using AAI@EduHr or eduGAIN.
Sign in using AAI@EduHR
AAIAAI@EduHrElectronic identity in the AAI@EduHr system can be obtained by members of the academic and research community in the Republic of Croatia exclusively at the competent home institution. More information about AAI AAI@EduHr are available on https://www.aaiedu.hr/
...