## 5 Fingerprint per educational level
### Usability  
This section outlines the respondents' perceived usability of BS. The following results in Figure 9 draw a clear picture of users' perception for systems' easiness, indicating that the majority do not find any particular difficulty (easily and very easily both at 32%), while only 3% of them consider biometric techniques to be \"Very Difficult\" to be used. Therefore, most of them (68%) do not consider that special training is required. However, a not-ignorable proportion (32%) of them supports that training is needed. Thus, findings support that for the majority, there is no effort required for the learning and using of BS, indicating that new technology could be easily adopted since students perceived BS to be easy to be used. Previous research [41] regarding consumers' adoption of biometric systems in restaurants validates the direct positive relationship between perceived ease of use and attitudes toward adopting and using BS. Users were also asked to choose among the most important advantages of BS. Most of them (41%) focused on the probability of accurate identification, based on their unique characteristics, 26% on the verification speed, and 19% referred to the lack of passwords' memorization. A proportion of 11% of them found it important that the use of a key, card or other device is not required, while 4% declared the convenience of being able to easily learn to use it. Such findings have been indicated in previous research [3], where participants cited increased ease of use (40%), increased convenience (31.2%), as well as cost savings for the users and security privileges. Furthermore, gender seems to be differentiated. Women, in particular (64%), as shown in Figure 10, considered accurate recognition to be the most important advantage. A total of 63% of the women compared them to passwords, and they believed that the verification speed is quite important, while 62% of them focused on the absence of remembering passwords. Figure 8: BS adoption in everyday life practices per students’ professional profile. As far as the disadvantages are concerned, the majority declared the risk of personal data breach (57%), and 21% the relatively high installation costs, while 6% of them considered the 'long registration procedures' to be a major disadvantage. What is striking is that, even though the risk for the personal data to be compromised was highly rated, only 5% of them declared to be concerned and fearful regarding BS use. Thus, in [4], previous research, 35.6% of the participants referred to the misuse or abuse of individual data since compromised biometric information stored in databases cannot be revoked. Moreover, as presented in Figure 11, the age group 18-22 indicated a greater concern for personal data risks (55%) and feeling fear and anxiety (49%) compared to the rest of the groups. Equally pronounced in each age group is the disadvantage of BS high costs, with the group of 18-22 being higher (47%). Finally, it is worth noting that the respondents of the 31-45 group (36%), who declared other as the most important disadvantage focused on the uniqueness of each person to be a privilege that brings complacency to users. Figure 10: BS advantages per gender. Figure 9: BS perceived easiness. What is more, respondents that declared fear or anxiety as a disadvantage, were asked to justify their answers. In this respect, 22% of them declared the fear of being \"registered on a server\" and \"access by third parties\", as well as the \"obtained users' information without their knowledge\". Similar results were indicated in [4]'s study as well, where 22% feared the selling of individual data to third parties since biometric information cannot be canceled if it is gained by a third party. As shown in Figure 12, the employment status acts as a differentiator.