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https://www.lifehacker.com.au/wp-content/uploads/2014/06/11/eipmdytcvckytin7dijb.jpg?quality=75640360Your computer’s MAC (media access control) address is an essential networking component, but also makes it possible for people to secretly track you. If you want to really prevent that from happening, blogger Jonathan Zdziarski shows off a simple bash script that will randomise your address every 30 seconds.