This thesis deals with notification between smart phone and application server which controls intelligent home. It is focused on Android mobile platform and it is implemented for that platform. Notification service Google Cloud Messaging is used because it is not possible to directly address mobile phones from server. Based on actual position and user defined area the server is informed about moving to or from the area. The server can perform defined event automatically with these information. Implementation was tested in real system. Alpha and beta versions were regularly published.

This study examines whether the breakthrough of push notifications has affected journalism, and what characterizes the editorial content of push notifications. The study focuses specifically on the two Swedish newspapers Aftonbladet and Dagens Nyheter. Qualitative interviews have been conducted where two people from each newspaper, who in various ways encounter push notifications in their daily work, had the opportunity to share their experiences in the area. These interviews have then been supplemented with a quantitative content analysis, where the two newspapers push notifications are categorized based on specific variables and variable values. The study's theoretical framework is based on theories of news evaluation, news selection and editorial routines. Combined with previous research on what makes news, differences between morning and evening press as well as the consequences of the push notifications, the results of the study is discussed. The conclusions are that the work with push notifications is demanding, competitive and keeps a high tempo. The goal of being first with the push notification can lead to the verification process being down prioritized. There is also a connection that shows that too many push notifications increase the number of news application-uninstallations. In addition, it is concluded that the newsworthiness behind Aftonbladet and Dagens Nyheters push notifications to some extent follows the same pattern as when it comes to news in general. Based on theory and previous research, push notifications seem to be an extension of what characterizes morning and evening press. Both Aftonbladet and Dagens Nyheter focuses on the news that is typical for respective newspapers. However, the push notifications place higher demands when it comes to befit the whole audience. / Denna studie undersöker huruvida pushnotisernas genombrott påverkat journalistiken, samt vad som karaktäriserar det redaktionella innehåll som sänds ut via pushnotiser. Studien fokuserar specifikt på de två svenska dagstidningarna Aftonbladet och Dagens Nyheter. Kvalitativa intervjuer har genomförts där två personer från respektive tidning, som på olika sätt kommer i kontakt med pushnotiser i sitt dagliga arbete, haft möjlighet att berätta om sina erfarenheter i området. Dessa intervjuer har sedan kompletterats med en kvantitativ innehållsanalys, där dagstidningarnas pushnotiser kategoriserats utifrån bestämda variabler och variabelvärden. Studiens teoretiska ramverk har utgångspunkt i teorier om nyhetsvärdering, nyhetsurval och redaktionella rutiner. Utifrån dessa teorier, samt tidigare forskning om vad som blir nyheter, skillnader mellan morgonpress och kvällspress samt notisernas konsekvenser, diskuteras studiens resultat. Slutsatsen som dras är att arbetet med pushnotiser är krävande, tävlingsinriktat och håller ett högt tempo. Målet att vara först ut med pushnotisen kan leda till att verifikationsprocessen nedprioriteras. Det finns även ett samband som visar på att för många pushnotiser ökar antalet avinstallationer av nyhetsapplikationen. Utöver detta dras slutsatsen att nyhetsvärderingen bakom Aftonbladets och Dagens Nyheters pushnotiser till viss del följer samma mönster som när det kommer till nyheter generellt. Utifrån teori och tidigare forskning har pushnotiserna visat sig vara en förlängning av vad som karaktäriserar morgonpress respektive kvällspress, där Aftonbladet respektive Dagens Nyheter fokuserar på de nyheter som följer deras profilering. Pushnotiserna ställer emellertid högrekrav på att lämpa sig för hela läsarkretsen.

各種行動裝置服務不僅便利了生活，也讓資訊的傳遞更加即時且無界。2012年起，五家媒體藉助行動通訊軟體LINE在台灣的高人氣，每日固定推播四則新聞，總訂戶數至今突破450萬人，儼然成為一個新興的新聞傳播渠道。 本研究以情境理論的觀點，質化的使用者日誌記錄法和深度訪談法為主，理解使用者在不同情境下使用推播新聞的行為，並透過HTML5文字雲分析機，歸納出各家媒體推播內容的樣貌和趨勢。情境分析構面包含接收與閱讀情境下的「實體環境」、「社交環境」、「資訊環境」、「先前狀態」和「時間的影響」等；另再針對使用過程中面臨的「人機互動情境」綜合分析使用者的體驗。 這些情境因素不僅各自影響媒介使用的動機和行為，也會與新聞內容相互加強（或制約）吸引力，端賴哪方拉力（或推力）較強。根據訪談結果，「新聞內容」的影響力似乎又更為關鍵。受訪者普遍認為推播新聞的即時性和重要性偏低，新聞價值未能滿足期待，導致對LINE推播新聞的需要性和依賴性偏低。 未來業者可考慮設立不同的「主題式官方帳號」，提供針對性的內容；或者在目前的官方帳號中，增加一日新聞類型的多元性以滿足更多人的需求，就看媒體如何定位自家官方帳號的角色。此外，在發揮新聞標題創意的同時，仍應與內文保持一致，避免造成期待上的落差。不斷強化內容品質，並考量主要受眾的使用情境，可望改善體驗不佳的問題。 本研究以情境理論的觀點，開啟了「推播新聞」的學術研究基礎，並充實行動新聞領域的實證研究經驗，希望提供未來的研究者和新聞從業人員，一個了解推播新聞使用行為的先例。 / Mobile devices and services facilitate our lives, and also assist in delivering information more freely and immediately. Since 2012, five companies send four pieces of news daily through “LINE”, which is the most popular mobile instant messaging application in Taiwan. Nowadays, LINE becomes an emerging news channel, with over 450 million subscribers in total. This study is mainly based on the context theory, by means of diary method and in-depth interviews, to understand users’ behavior of push notifications news in different contexts, from news receiving aspect, reading aspect and human-computer interaction aspect. Besides, analyzing the news headlines by “HTML5 Text Analyzer” to explore the features of different media. Research found that users’ behavior and attitude influenced not only by contextual factors, but also by the value of content. Moreover, the effect of contextual factors and content would be reinforcing (or restraining) mutually, depends which one influence users’ behavior and attitude more crucially. According to respondents’ feedback, the value of push notification news, such as immediacy and importance, were far from their expectations. News editors may plan to set up more than one official account to reach target audience; or to increase the diversity of daily news by existing accounts, making effort to meet demand of more audience. In addition, the headline should be more concordant with the content of the news. Keep improving the quality of content, taking account of context factors while pushing news, may improve users’ experience.

Virtual currencies and mobile banking are technology advancements that are receiving increased attention in the global community because of their accessibility, convenience and speed. However, this popularity comes with growing security concerns, like increasing frequency of identity theft, leading to bigger problems which put user anonymity at risk. One possible solution for these problems is using cryptography to enhance security of Bitcoin or other decentralised digital currency systems and to decrease frequency of attacks on either communication channels or system storage. This report outlines various methods and solutions targeting these issues and aims to understand their effectiveness. It also describes Secure Bitcoin Wallet, standard Bitcoin transactions client, enhanced with various security features and services.