The battle between the FBI and Apple over access to the iPhone of San Bernardino, California, killer Syed Farook came to an abrupt end last week when the agency announced it no longer needed the company's assistance to crack the device. Since the U.S. Department of Justice delayed a hearing on an order to force Apple to assist the FBI in brute-forcing the password on Farook's phone, speculation has spread about how the agency planned to access the data on the device without the help of the iPhone's maker.