About 18 months ago, reports indicating that the NSA spied on the private communications of Brazilian President Dilma Rouseff began to surface. Now comes word via Bloomberg that Brazil is working hard to develop a phone that it hopes will effectively be impossible to breach.

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Dubbed the Granite Phone, the device is set to debut on March 2 during Mobile World Congress, an annual exhibition for the mobile industry held in Barcelona.

Sikur, a security company backed by private-equity firm G5 Evercore and former beer baron Jose Augusto Schincariol, started to develop the device after the Rousseff case broke and the banks’ worries increased. … The phone will leave no unshielded records of calls, text messages or data storage to be stolen. It will be unblocked, meaning it can be used with any carrier, and may carry a price tag of about $800 in the U.S., Sikur said.

That sounds all well and good, but after the avalanche of NSA related hacking stories that has emerged over the past many months, it’s hard to believe that anything anyone does on an electronic device is truly safe from a motivated party intent on swiping ostensibly private data.