Abstract: This study surveyed citizens (n = 1.501) from the Czech Republic, Greece, and Spain to analyse public acceptance of new technologies for preventing terror attacks in urban areas. Our results reveal that threat perception and privacy concerns impact on pre-existing attitudes toward surveillance technologies. We found that 25 % of participants trusted the proposed technologies while 50 % saw them as effective but invasive. Results also reveal sociodemographic factors that significantly shape acceptance including age, gender, education, political views, and geographical location. Furthermore, the proposed model, which links acceptance to knowledge, perceived effectiveness, intrusiveness, and trust in institutions, was found reliable and valid.
