A list containing unique identifiers, typically IMEI numbers, of mobile devices that have been reported as lost, stolen, or associated with fraudulent activity. Devices included on this list are generally blocked from accessing cellular networks within participating countries. For instance, if a smartphone is reported stolen and its IMEI is added to such a registry, it becomes unusable on most cellular networks, preventing unauthorized access to cellular services.
The purpose of maintaining such a registry is to deter phone theft and combat mobile device fraud. By rendering stolen devices unusable, the incentive for stealing them decreases. Furthermore, this mechanism aids in preventing fraudulent activities often associated with illegally obtained mobile devices. The implementation of these lists has a historical precedent in efforts to secure telecommunications infrastructure and protect consumers from financial losses due to theft and fraud.
