If the past few months have taught us anything, it's that everything we do online leaves a digital trail. While it may seem like there's not much we can do about it, there are some tech companies that are working to obscure that trail a little bit, with a process known as encryption.
People who use Gmail and other free email systems have no reasonable expectation of privacy, according to papers filed in a U.S. district court by lawyers for Google. The filing was made in June, when Google moved to dismiss a case accusing it of breaking federal and state laws by scanning users' emails to help target its advertising campaigns.
In making its case, Google compared sending an email to other types of communications where privacy cannot be expected:
A promotional image from Renew shows one of its recycling/advertising kiosks in London. City officials asked the company to stop recording data about the phones of passing pedestrians.
The city of London has ordered a company to cease tracking the cellphones of pedestrians who pass its recycling bins, which also double as kiosks showing video advertisements. The bins logged data about any Wi-Fi-enabled device that passed within range.
The company, called Renew, recently added the tracking technology to about a dozen of the 100 bins it had installed before London hosted the 2012 Summer Olympics.