Which method is NOT a way to discover contraband?

Discovering contraband within correctional facilities is a critical task that requires careful and effective methods. The method identified as not being a way to discover contraband involves conducting personal conversations with inmates. This approach does not yield physical evidence or lead to the identification of hidden items. Inmates may not openly disclose the presence of contraband during conversations, and relying purely on dialogue does not employ any tangible or systematic methods of search.

In contrast, the other methods mentioned—using a metal detector, visual inspection, and feeling with a probing device—are all physical and sensory techniques that facilitate the identification of contraband. Metal detectors are effective for finding metal items that could be used as weapons or tools for escape. Visual inspections allow officers to observe any suspicious behavior or items that may indicate the presence of contraband. Lastly, using a probing device can help detect hidden items within personal belongings or facility structures. These methods are direct and proactive, aimed at ensuring safety and security within the facility, making them integral to contraband detection.