The innovative design allows for simultaneous tensioning and reading of internal lock components. This integration provides direct, unfiltered tactile feedback to the operator, transforming abstract sensations into clear, interpretable information.

• In buildings with master key systems, security professionals can use the Lishi tool to diagnose the system. By reading the depths in a lock, skilled technicians can sometimes deduce or verify the master key and change key bittings, aiding in system auditing.

• Primary advantage is its capability for non-destructive entry, preserving the lock's integrity for continued use. Beyond mere entry, its core function is to "read" a lock by decoding pin depths to generate the numerical bitting code for a new key.

• Apply very slight rotational pressure to the tool, as if trying to turn a key. This tension, typically clockwise for most automotive locks, is the foundational force that creates the binding conditions necessary for decoding.