John, widely know as The Telephone Man, is a Telecomms veteran with more than 40 years of experience working in the areas of secure mobile phone and data communications, secure business VoIP systems and development of tools and systems to allow use of the Internet without Government, state or other players accessing your data.

He has vast experience in open source solutions, including Asterisk, Yate, A2Billing, Tor, Tails, OpenBTS, Osmocom solutions and open source end to end mobile communications systems.

He is an  expert in secure phone systems.