A police radio scanner is a receiver that monitors public-safety and other radio traffic. Modern scanners must handle digital modes, trunking and, in many areas, encrypted channels. Check local systems and laws before listening or sharing audio.
Cingular Wireless built a strong reputation in the 2000s for GSM-based compatibility and international roaming. The brand was rebranded into AT&T Mobility in 2007, and its legacy continues in today's LTE/5G networks and roaming services.
Telephone recording has moved from tape decks to digital devices, smartphone apps, VoIP and cloud services. Modern systems add encryption, transcription and compliance features, serving businesses, remote workers and everyday users.