gouging Archive

Web companies can track you — and price-gouge you — based on your battery life

In Online tracking: A 1-million-site measurement and analysis, eminent Princeton security researchers Steven Englehardt and Arvind Narayanan document the use of device battery levels — accessible both through mobile platform APIs and HTML5 calls — to track and identify users who are blocking cookies and other methods of tracking. But the takeaway isn’t just that you might be tracked based on your “leaky …