Dev.SN

dotdotdot writes:

"Joaquin 'El Chapo' Guzman used high-tech gadgetry to elude an international manhunt for 13 years.

Some of the communications equipment Guzman used was not generally available to consumers. The sophistication of the gear and Guzman's diligence deeply impressed investigators who were pursuing him. Among other practices, Guzman employed counter-surveillance scanners to detect transmitters hidden in rooms or carried by people with whom he was meeting.

The officials would not discuss the specific methods used over the last 13 years."

Ed's Note: There is more information in the article, although not in as much detail as I would have liked. Nevertheless, I would recommend giving it a read.