The Electronic Frontier Foundation (EFF) has petitioned the U.S. Copyright Office for an exemption from the Digital Millennium Copyright Act (DCMA) for cell phone owners who 'jailbreak' or hack their cell phones in order to run third-party applications not approved by the cell-phone manufacturer. Even though there is no copyright violation involved in unlocking the cell phone, users face the threat of a lawsuit by carriers for unlocking their phones. The best example that comes to mind are the many iPhone users who have jailbroken their units in order to run application not purchased through Apple's App Store. The EFF is claiming companies are unfairly hiding behind the DMCA in an effort to protect their business models. The EFF maintains the Act was intended to block infringement and not stifle competition.