The Daily Dose

There are a myriad of ways you can be tracked online – from supercookies, to canvas fingerprinting and malware. Now you can add your device’s battery status to the list, according to research by Steve Engelhard and Arvind Narayanan – two academics from Stanford University. The attack takes advantage of the HTML5 Battery Status API, which allows servers to determine when they need to send an energy-efficient version of a website. It lets them see how much charge a laptop, tablet, or smartphone has in terms of time remaining until discharge, and as an overall percentage. The researchers have determined that these two figures can…

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