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Sideloading is a term used mostly on the Internet, similar to "upload" and "download", but in reference to the process of transferring data between two local devices, in particular between a computer and a mobile device such as a mobile phone, smartphone, PDA, tablet, portable media player or e-reader. Sideloading typically refers to media file transfer to a mobile device via USB, Bluetooth, WiFi or by writing to a memory card for insertion into the mobile device. The term is also used to refer to the practice of alcohol consumption in between visits to licensed venues while on a night out. 〔http://www.smh.com.au/national/drinkers-get-loaded-before-between-venues-and-after-their-big-night-out-20131124-2y3xx.html〕 When referring to Android apps, "sideloading" typically means installing an application package in APK format onto an Android device. Such packages are usually downloaded from websites other than Google Play, usually through a computer. Sideloading of apps is only possible if the user has allowed "Unknown Sources" in their Security Settings.〔(【引用サイトリンク】101 )">work=phandroid.com )〕 ==History== The term "sideload" was coined in the late 1990s by online storage service xdrive.com as an alternative means of transferring and storing computer files. In 2000 idrive.com applied for a trademark on the term.〔(Trademarkia.com )〕 Rather than initiating a traditional file "download" from a website or FTP site to their computer, a user could perform a "sideload" and have the file transferred directly into their personal storage area on the service. Usage of this feature began to decline as newer hard drives became cheaper and the space on them grew each year into the gigabytes. The launch of Apple’s iTunes Store brought sideloading to the masses, even if the term was not widely adopted at the time. The service allowed iPod users to download content to their PCs and sideload it to their iPods. This approach was also adopted by other portable media player manufacturers. For mobile phones, sideloading was something of a niche, particularly as the performance, storage and transfer options varied greatly between devices. Although there were some early attempts at delivery of entire movies on memory cards, the number of devices supported was small and adoption was low. However the situation started to change in June 2007 with the launch of (Clippz.com ).〔http://broadcastengineering.com/RF/clippz-care-free-mobile-video/〕 It allowed mobile phone users to download and sideload user generated video in formats optimized for any device. In the same month, Apple launched its iPhone, which was the first mobile phone to be focused on a sideload delivery of content (again from iTunes) rather than through the wireless network. Today, sideloading is far more widespread and virtually every mobile device is capable of sideloading in one or more ways. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「sideloading」の詳細全文を読む スポンサード リンク
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