The anti-snoop Blackphone

Revelations by US whistleblower Edward Snowden have put privacy and data security high on the agenda.

BBC Click's Jennifer Copestake looks at a new smartphone which offers encrypted text messages and calls and allows you to control what information the phone transmits wirelessly as you move around.

But is the Blackphone, made by Silent Circle, secure enough to stop the US National Security Agency getting access to your data?

Watch more clips on the Click website. If you are in the UK you can watch the whole programme on BBC iPlayer.