Running PrivatOS, a version of Android customized to harden the security of the OS, the Blackphone is a collaboration between security software firm Silent Circle and smartphone maker Geeksphone. Its management team includes Phil Zimmermann, creator of PGP. While this smartphone has decent hardware specs (4.7-inch display with 1920-by-720 pixels, and quad-core 2 GHz CPU), it sells for $629, which is a bit steep. It’s a little unclear what exactly PrivatOS provides in terms of greater security that you wouldn’t be able to add yourself by installing third-party apps to a current Android smartphone. But it’s being marketed as an out-of-the-box security solution catering to business and government customers, and the privacy conscious individual.