Be aware of your smart phone battery, your smart phone battery may spy on you. Yes the presents researchers has found that your data can be hacked using your smartphone battery.
The revolutionary HTML5 has a feature by which a website can detect how much battery life is left in the user laptop or mobile device, thus the website can track the online user.
French and Belgium security researchers has claimed that websites are gathering data like how long it take to die a battery and capacity of remaining battery. The researchers point out that the information a website receives is surprisingly specific, containing the estimated time in seconds that the battery will take to fully discharge, as well the remaining battery capacity expressed as a percentage. These two specific information generates a unique id, which can be used to detect the browser of the website. The researchers also found that on some platforms, it is possible to determine the maximum power capacity of a device with enough queries which creates a semi- permanent matric to compare devices.
Users who use their browser in private mode is also not safe , because whenever user visit a website back to back they compare the battery power of both instance. Website also compare the cookies and detect the browser.
World Wide Consortium in year 2012 has introduces battery API, which is supported in Firefox, Opera and Chrome browsers. The purpose was to help online user conserve their battery power. In this feature whenever any user has a low battery browser itself shift to low consumption battery mode by switching off their minor features.
These features can be used by many illegal group who want to track your important data and records. The one big drawback of this feature is that in do not need user permission to change their battery mode.
However the present researches has challenged the W3C claims.
Source: the guardian