Diamond mine security and internal investigations.

Operational applications

A missing stone is only one part of the investigation.

An unexplained inventory difference may involve a recovery area, a sorting room, a vault, or a transfer between custodians. The security team needs more than a general denial or an assumption about who had access. It needs a clear account of what happened, which responsibilities applied, and where the record no longer agrees with the explanation.

AISIS provides AI-assisted review of stress-related vocal information during structured investigative interviews. It gives trained examiners an additional source of information when deciding which responses warrant clarification. The objective is a better-defined follow-up question or verification task, not an accusation based on a voice indication.

Illustrative investigative applications

Resolve specific gaps, not general suspicions.

Inventory or vault discrepancy. Establish when the count was last reconciled, who recorded each movement, and which checks were completed. An interview can clarify a reported exception, an undocumented handover, or a difference between the written entry and the person's recollection. Follow-up should return to the underlying count and transfer records rather than treating familiarity with the vault as evidence of involvement.

Transport or courier handover. Define who accepted custody at each stage and what each person directly observed. If an account introduces an additional stop, a changed instruction, or a substitute recipient, record that detail as a lead to verify. Check the available dispatch information, acknowledgments, route records, and other relevant accounts before drawing conclusions.

Suspected internal collusion. Distinguish individual actions from assumptions about a group. Interview personnel separately about defined events and responsibilities. Look for explanations that can be tested against independently obtained information, while keeping alternative explanations open. A person's association with another employee is not itself evidence of wrongdoing.

These scenarios describe potential applications, not customer deployments, operational results, or validated examination scripts. Formal procedures and question formulation remain the responsibility of trained examiners.

Two products. Examiner-led investigation.

AISIS innovation. VASIS experience.

AISIS is VIPRE's AI-assisted system for reviewing stress-related vocal information during investigative interviews. It supports trained examiners in identifying responses that warrant clarification and independent follow-up.

VASIS remains an active VIPRE product, with more than 20 years of operational use by trained investigative professionals. Its established voice stress technology provides an examiner-led option alongside AISIS.

Review both systems in the context of your team's responsibilities, mine-site interview conditions, training, and examination procedures. Neither system replaces custody records, physical security controls, or independent evidence.

Responsible use

An investigative aid, not proof of guilt.

Voice stress indicators do not, by themselves, establish deception or guilt. Anxiety, the significance of a question, interview conditions, and other contextual factors must be considered. Findings belong alongside the full interview, supporting evidence, and other investigative information.

Neither AISIS nor VASIS replaces physical security, inventory reconciliation, access controls, surveillance, or established incident-response procedures. Neither system should be used as an automatic hiring, access, or disciplinary decision. Security managers should establish authorized use, appropriate participation procedures, recording arrangements, and responsibilities for review before introducing examinations.

A clear report distinguishes the interviewee's account, the examiner's observations, and verified facts. Preserve that distinction when passing information to management or another investigative agency. An uncorroborated lead remains a question to investigate, not a finding to present as settled.