Are jammers installed in prisons to prevent prisoners from escaping?

Prison authorities in Quebec will eventually be able to install 4G jammer in jail to better neutralize the smuggling of cell phones among inmates.
The Department of Public Safety (MSP) confirmed to the Journal that the use of these devices – which are banned in Canada – will be exceptionally authorized in prisons and penitentiaries to fight this scourge
Several provinces, including Quebec, urged Ottawa to amend its Radiocommunication Act, to allow them to use jammers to “disconnect” detainees who bring smartphones into jail
The Quebec correctional services – undermined by two escapes from detainees in helicopters in as many years and by the mistaken release of Maurice “Mom” Boucher’s son Francis, on the run since Monday – remain however elusive on the application of This measure
The neighbors of some radar scramblers located in urban areas risk being affected and no longer able to use their cellphones
“Very expensive”, these devices quickly become “obsolete”, in the face of technical developments such as the transition from 3G to 4G, explains the Keeper of the Seals.
To address these problems, a working group of several manufacturers, supported by the Groupement des Industries Françaises de Défense Terrestre (GICAT), was set up in 2013. As a result, new generation models are now being tested in two Ile-de-France establishments, including that of Fresnes. “Placed at the entrance of the cell, they are much more precise in their field of action,” explains Christopher Dorangeville. Three million euros will be invested, in order to be able to equip 26 sensitive establishments, within three years. Thales, which is already working with the Ministry of Justice on electronic bracelets and the national platform of judicial military jammer interceptions, which manufactures them. “The choice of technology which will be retained is not yet arbitrated because the evaluation of the experiment is still underway, “said the spokesman for the Ministry of Justice.