One Way to Prevent Police From Surveilling Your Phone

You can add a PIN code to your phone’s SIM card in order to prevent police from cloning it.

Your local police force could download everything from your phone without your consent

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One Way to Prevent Police From Surveilling Your Phone

Policing police drones: How regulations can protect privacy while expanding public safety - Route Fifty

Cops wanted to keep mass surveillance app secret; privacy advocates refused