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Reference.org
MAC address anonymization
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<p>MAC address anonymization performs a <a href="/facts/One-way_function/rGtcumDW">one-way function</a> on a <a href="/facts/MAC_address/SVcTfgUH">MAC address</a> so that the result may be used in <a href="/facts/Tracking_system/4fKPC7Fp">tracking systems</a> for reporting and the general public, while making it nearly impossible to obtain the original MAC address from the result. The idea is that this process allows companies like <a href="/facts/Google/GT9Sugza">Google</a>, <a href="/facts/Apple_Inc./oTJYta3k">Apple</a> and CrowdVision - which track users' movements via their computer hardware - to simultaneously preserve the identities of the people they are tracking, while tracking the hardware itself. </p>