A leaked document from the Chicago PD Crime Prevention & Infor | OTAS: operational thinking against the state

A leaked document from the Chicago PD Crime Prevention & Information Center describes the potential for decentralized encrypted communications to defeat surveillance by law enforcement, citing goTenna Mesh devices in particular.

goTenna Mesh:
https://gotennamesh.com

similar projects you can build yourself:
https://disaster.radio
https://www.meshtastic.org