Based on historical reports and research, here are documented methods that have been used to smuggle phones into prisons in the past:
Through prison staff and contractors - According to research, corrupt staff members have been one of the primary vectors for contraband phones entering facilities Urban Institute
Visitor smuggling - During in-person visits, before enhanced security measures were implemented
Aerial delivery - Drones have been used to drop contraband over prison walls Quora
Through mail and packages - Which is why correctional facilities have implemented strict screening procedures
During prisoner transfers - When inmates are moved between facilities
Through construction or maintenance projects - When outside workers access the facility
These historical methods have led to the development of various interdiction technologies in prisons, including:
- Enhanced screening procedures
- Cell phone detection systems
- Phone-blocking technology
- Specially trained staff and K-9 units
- Regular cell searches
The Urban Institute and Department of Justice have conducted extensive research on this issue as it presents significant security concerns for correctional facilities.