By Dan Thomas, map by John Burn-Murdoch
The animated map below shows a year’s worth of my mobile phone data obtained from my mobile operator, Three.
Every point that appears on the map is a phone call I made or text message I sent, with the location derived from the handset’s distance from the nearest antenna masts.
This news story has more detail on the reasons companies hold this data, the implications for your privacy and other cases where individuals have used data request laws to shed light on just how much personal information organisations hold. Read more