"Why would anyone be watching me? I'm nobody." If this is your contribution to conversations about mass surveillance, tech journalist Marta Peirano would like a word with you. Wielding cautionary tales about contemporary data collection that make the Stasi seem quaint, Peirano explains how the data that our phones and algorithms automatically collect about us is ripe for misuse and exploitation by the next authoritarian regime. (In Spanish with English subtitles)

Marta Peirano: The surveillance device you carry around all day

The surveillance device you carry around all day

Our mobiles, pinging every five minutes, create a digital diary of our lives, more detailed than any surveillance of the past.

Data from mobiles can isolate influential individuals in crowds, showing how surveillance can manipulate social dynamics.

The mere existence of our data makes us vulnerable to exploitation we can't foresee, underscoring the need for digital curtains.