The recent launch of a new mobile phone service introduced significant new privacy protections into the mobile phone system. This exciting new approach highlights the failure of the existing mobile phone infrastructure to protect privacy, and points the way forward for a wide variety of technologies. Today's cellphones are generally a privacy disaster. Partly that's the result of the two companies that control the operating system software on the vast majority of the world's pocket computers. In order for your carrier to route calls and data to your phone, the network needs to constantly know which cell tower your phone is near. And when you make a call or use data, the provider can see where that traffic is going. Cell carriers track and store this accidental byproduct of the technology in order to record people's location history and network activity for marketing purposes and, in certain circumstances, for sharing with law enforcement. The new phone service, called Pretty Good Phone Privacy (PGPP), uses encryption techniques to deliberately blind itself so that it can't know that the user of a mobile device is you, or what data you are sending from that phone. You connect to the PGPP service for payment, and that's all. With PGPP's approach, the carrier simply does not have the data to turn over to anyone. It cannot be sold, leaked, or hacked, let alone offered to overreaching law enforcement agencies. Verizon, T-Mobile, AT&T, and their smaller competitors could be offering such a privacy-protecting service, but don't want to.