What do you know about cryptography? Have you ever wanted to get a better understanding of some of the maths behind encryption? This week we speak to Ed, a Senior Technologist at PI, about some of the history and basics of encryption. Find out more about encryption: - Computerphile on youtube...

This week we speak to Mark Nelson, a car mechanic and father of five, who has been forced to wear a GPS tag by the Home Office for the past 20 months, and his lawyer Katie Schwarzmann of Wilsons Solicitors. The pair have been challenging the Home Office's ongoing imposition of GPS tracking on...