Proyecto de Norma Oficial Mexicana PROY-NOM-220-SCFI-2017, Especificaciones y requerimientos de los equipos de bloqueo de señales de telefonía celular, de radiocomunicación o de transmisión de datos e imagen dentro de centros de readaptación social, establecimientos penitenciarios o centros de internamiento para menores, federales o de las entidades federativas (Draft Mexican Official Standard PROY-NOM-220-SCFI-2017: Specifications and requirements for equipment to block mobile phone signals, radiocommunications and the transmission of images and other data within federal and state social rehabilitation centres, prisons and youth detention facilities) (4 pages, in Spanish)

The products targeted by this standard include all signal-blocking equipment that, in the technical operating field, block, cancel or permanently eliminate mobile phone signals, radiocommunications and the transmission of images and other data within federal and state social rehabilitation centres, prisons and youth detention facilities, regardless of their designation.