![]() Also creating Apple IDs and social media accounts, and backing up and unlocking phones and recovering data." The kars collectively maintain an archive of hundreds of terabytes of data. In 2021 Taliban-governed Afghanistan, "computer kars" distribute Internet-derived content by hand: "Movies, music, mobile applications, iOS updates, and naughty videos. In fact, when mailing media with sufficiently high data density such as high capacity hard drives, the throughput (data transferred per unit of time) as well as the cost per unit of data transferred may compete favorably with networked methods of data transfer. This provides a viable mode of transport for long distance sneakernet use. The United States Postal Service offers a Media Mail service for compact discs, among other items. The ease of this system has been facilitated by the availability of USB external hard drives, USB flash drives and portable music players. This form of data transfer is also used for peer-to-peer (or friend-to-friend) file sharing and has grown in popularity in metropolitan areas and college communities. Because sneakernets take advantage of physical media, security measures used for the transfer of sensitive information are respectively physical. A sneakernet may be used when computer networks are prohibitively expensive for the owner to maintain in high-security environments where manual inspection (for re-classification of information) is necessary where information needs to be shared between networks with different levels of security clearance when data transfer is impractical due to bandwidth limitations when a particular system is simply incompatible with the local network, unable to be connected, or when two systems are not on the same network at the same time. Sneakernets are in use throughout the computer world. Comparison of Internet Relay Chat clientsĬompact cassettes were a natural way of transferring data between ZX Spectrum systems in the 1980s and 1990s. ![]() Memory cards are a popular physical medium for transferring files and have become smaller in size as technology has advanced Part of a series on ![]()
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