There might be some credence to worries that your smartphone batteries can undermine your privacy after all. But not as ludicrous as the NFC antenna mistaken for a spying contraption. This new theory has the backing of French and Belgian researchers. But before you throw out that battery, be aware that it isn't the battery itself that is doing the potential spying. It is merely an unwilling accomplice for less than conscientious websites that might be trying to identify your device, whether you like it or not. And you probably don't.