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Using Near-Field Communication (NFC) to Improve Messaging Privacy on Android OS / Using Near-Field Communication (NFC) to Improve Messaging Privacy on Android OSKarmazín, Jaromír January 2016 (has links)
V této práci vytváříme jednoduchý systém pro rychlou textovou komunikaci (IM), který využívá technologii Near-Field Communication (NFC) ke zlepšení bezpečnosti a soukromí. V první části zkoumáme samotnou technologii NFC. Poté se věnujeme možnostem NFC v operačním systému Android pro chytrá mobilní zařízení a také existujícím aplikacím, které tyto možnosti využívají. Rovněž zkoumáme nejmodernější přístup k bezpečnému IM, zejména Signal Protocol a jeho open-source implementaci pro Android. Dále pak navrhujeme IM systém, který používá Signal Protocol pro šifrování zpráv a NFC pro výměnu kryptografického materiálu, aniž by vyžadoval použití telefonních čísel nebo důvěryhodnou třetí stranu. Nakonec předkládáme vzorovou implementaci klientské i serverové aplikace a zhodnocení vlastností tohoto systému z hlediska soukromí a bezpečí.
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Social networking : a psycho-educational analysis of online adolescent friendshipsDavel, Coriena 11 1900 (has links)
Online adolescent friendships and social networking among adolescents are current phenomena that have emerged, and exploded, as part of the digital age and the vast development of communication technologies. The primary aim of this study was to gain knowledge and understanding regarding the nature and quality of online friendships and social networking among adolescents. A sequential explanatory mixed method design, was put to use for the purpose of this study. The quantitative data was collected first in the form of a short survey, by utilising a self-developed questionnaire to obtain a general overview of the social network practices and the forming and maintaining of online friendships among adolescents. Twenty five participants took part in the survey. This study was followed by a qualitative study in the form of interviews, to clarify, elaborate and explain the quantitative findings. Five information rich participants were interviewed. The findings of the empirical investigation revealed that adolescents, being part of the Net Generation, base their concept of socialising with friends on digital and communication technology, especially cell phones. They are connected to their friends 24 hours a day. The sense of safety and support they experience through this constant connectedness strengthens their self-esteem, self-confidence and self-worth and contributes to their identity formation. It is therefore recommended that parents and educators should accept that adolescents live in a virtual world and their new way of socialising, needs to be acknowledged. Parents and educators should adjust accordingly, by getting educated in this field themselves. The Net Generation is a generation who focuses on relationships and collaboration through technology and this should be exploited by anybody who has contact or interacts with the adolescent of today. / Psychology of Education / M. Ed. (Guidance and Counselling)
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Social networking : a psycho-educational analysis of online adolescent friendshipsDavel, Coriena 11 1900 (has links)
Online adolescent friendships and social networking among adolescents are current phenomena that have emerged, and exploded, as part of the digital age and the vast development of communication technologies. The primary aim of this study was to gain knowledge and understanding regarding the nature and quality of online friendships and social networking among adolescents. A sequential explanatory mixed method design, was put to use for the purpose of this study. The quantitative data was collected first in the form of a short survey, by utilising a self-developed questionnaire to obtain a general overview of the social network practices and the forming and maintaining of online friendships among adolescents. Twenty five participants took part in the survey. This study was followed by a qualitative study in the form of interviews, to clarify, elaborate and explain the quantitative findings. Five information rich participants were interviewed. The findings of the empirical investigation revealed that adolescents, being part of the Net Generation, base their concept of socialising with friends on digital and communication technology, especially cell phones. They are connected to their friends 24 hours a day. The sense of safety and support they experience through this constant connectedness strengthens their self-esteem, self-confidence and self-worth and contributes to their identity formation. It is therefore recommended that parents and educators should accept that adolescents live in a virtual world and their new way of socialising, needs to be acknowledged. Parents and educators should adjust accordingly, by getting educated in this field themselves. The Net Generation is a generation who focuses on relationships and collaboration through technology and this should be exploited by anybody who has contact or interacts with the adolescent of today. / Psychology of Education / M. Ed. (Guidance and Counselling)
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