## 5 Conclusions  
Technology acceptance, as a complex notion, is significantly differentiated among users due to several social factors that reform their views and behavior. Our survey focused on the Greek University of the Aegean Students' BS acceptance, and in particular, on the sociodemographic attributes that influence their willingness to adopt and use BSs, since it has been underlined by previous literature [9; 15] that not much research has been undertaken in this direction. Previous research, examining college students' BS acceptance, targeted only learning activities under the spectrum of technical factors [10; 21], while in Greece, such surveys are lacking even for the general population. Thus, due to the newly introduced cyber security and privacy threats regarding BS, the situational awareness, as far as their deployment is concerned, should be increased. Therefore, toward this, the identification of the prerequisites for users' acceptance that involve their specific traits deriving from their personality, life status and habitus, as technology acceptance models indicate, is immense. Furthermore, the social factors of the users are indicated as critical ones in the privacy domain [55; 56; 57; 58; 59; 60] as well, whose preservation is also significant for BS acceptance. In this respect, our survey aims, beyond those of previous works in the literature, to expand the knowledge regarding Greek users' BS acceptance in public and private services, attempting to gain insight through the perspectives of Greek students and the exploration of their socio-demographic profile, addressing that need, as already pointed out in the literature. As Greek users' acceptance is the issue of focus of this research, biometric service providers can consider the indicated factors, as well as users' concerns in order to improve their services. Furthermore, considering the new established Greek law for increasing security, adopting BSs as well within HEIs, these findings may be of major importance and help Greek public educational administrations. The adoption of such systems may be extravagant concerning their initial investment [3], and therefore Greek universities should be aware of their students' perceptions toward this. Our survey indicated students' familiarity with specific biometric techniques, fingerprinting and face recognition, which are adopted for specific daily activities--mobile unlocking--in order to ensure their security. Due to their perceived benefits of accurate identification and saving time, students support that BSs should be integrated in the private bank and airport services, while they do not trust public spaces at all. This finding, indicating students' mentality, puts forth extra challenges for Greek HEIs considered to be public spaces, highlighting that the trustworthiness of their provided biometric techniques should be increased. Several UA students' sociodemographic attributes are indicated to impact their BS acceptance, including gender, age, study level, year of study, professional profile and fathers' occupation. Students' social profile influences their technological choices and therefore, an adequate marketing policy, considering these social factors, should be developed both from industry's and universities' leadership, in order to enhance students' BS acceptance, by, for example, choosing the techniques that will be more easily adopted by them. Furthermore, contrary to previous literature [12], our survey also pointed out that several trust issues regarding users' intention to adopt and to use BSs in public and private services are linked with their privacy and security concerns. Biometric techniques and methods are still evolving in Greece, mostly in the private domain, while students are still doubtful regarding the ways that private services using their biometric information and the possibility for their privacy to be violated. These non-technical concerns, which are also potential risks, should be confronted when implementing identity biometrical verification technologies.