In case you can’t read the article to the right:

“Two inmates housed at different prisons used cellphones smuggled in by guards to run a drug ring that distributed methamphetamine and heroin, according to a federal indictment that charges 40 people in connection with the scheme. Prosecutors allege that the purported ringleader, Oscar Perez, and Justin Adler, an inmate at another prison, used the smuggled phones to hold conference calls with a third man to discuss “pooling their resources” to get a discount on heroin.

 Being able to monitor and detect all Wi-Fi and cellular devices could have found these phones much easier. Know your wireless environment!