This document introduces Visual Identification, a technology that aids the critical process of identifying relevant custodians in a legal case. It helps answer two key questions: who are the key custodians involved, and did you miss anyone? The technology visualizes how people are connected to identify all potential custodians, prioritize key ones, uncover unexpected custodians, and help ensure all relevant custodians are identified without over-collecting. An example use case describes how the technology helped a client identify the relevant 15 custodians for a product liability case, and uncovered 5 additional important custodians that had not been previously considered, including a contractor.