What the court values most in its judgments is the probative value of evidence. Probative value refers to the requirement that the evidence must have a natural relevance to the facts to be proven.

The Document Examination Department of Yitong Investigation Agency is dedicated to verifying whether various written documents possess probative value, so they can be used in court by litigants for evidentiary arguments.

Yitong Investigation Co., Ltd. offers a wide range of professional investigation services, including infidelity investigations, missing person searches, debt collection, premarital background checks, counterfeit and infringement investigations, surveillance and tracking, and private detective services. It also recommends legitimate investigation associations, guilds, and networks. Yitong Investigation Co., Ltd. was founded on July 20, 1984 (the 73rd year of the Republic of China). In response to societal needs, it brought together experts from various industries to pool their knowledge in solving and preventing crises faced by individuals and businesses. With over a decade of dedicated operation, the company has become an industry benchmark through its professional training, high case resolution rate, extensive network, and years of hands-on experience.

Expert Introduction

Name: Hu-Sheng Chen

Education:

• Bachelor of Law, Central Police University (1979)
• Master of Science, Central Police University (1979)
• Doctor of Philosophy, Department of Pure and Applied Chemistry, University of Strathclyde, UK

Experience:

• Adjunct Professor, Forensic Science Department, Central Police University (1987-2004)
• Full-time Lecturer (1979), Associate Professor (1983), Professor (1987) at Central Police University
• Director of Scientific Laboratory, Central Police University
• Current: Adjunct Professor, Department and Graduate School of Forensic Science, Central Police University (since 2004)
• Supervisor, Forensic Science Society of the Republic of China

Further Training:

• Document Examination, National Research Institute of Police Science, Japan
• Document Research, Department of Criminal Justice, San Jose State University, USA
• Laser Technology, Spectra-Physics, Silicon Valley, USA
• Document Examination Department, Forensic Division, Glasgow Police, UK
• Advanced Studies, Northern Illinois University, USA
• Advanced Studies, University of Minnesota, USA

Key Experience:

• Over 25 years of hands-on document examination experience
• Over 15 years of research and teaching in behavioral science methodology
• Over 20 years of research and teaching in social psychology
• Over 5 years of research and teaching in industrial management

Academic Qualifications:

• Bachelor of Laws in Criminal Forensic Science
• Bachelor of Laws in Police Administration
• Master of Science in Criminal Forensic Science
• Master of Arts in Sociology
• Doctor of Philosophy in Criminal Forensic Science
• Doctor of Philosophy in Sociology

Previous Teaching Roles:

• Forensic instructor at various national training institutions
• Professor of Document Examination at: Central Police University, National Security Bureau, Military Police School, Police College, and other specialized agencies

Services Offered

Property & Financial Document Examination:

• Signature verification on credit card receipts
• Identification of forged or altered real estate documents

Commercial & Trade Document Examination:

• Authenticity verification of business contracts
• Detection of forged internal corporate documents

Medical & Insurance Record Examination:

• Detection of tampered medical records
• Identification of falsified prescriptions

Identity & Certification Document Examination:

• Detection of forged academic credentials
• Identification of altered employment history documents

Anonymous Writings & Letters Examination:

• Identification of anonymous letter authors
• Verification of handwriting on suspicious exam papers

Other Document Examination Services:

• Ink differentiation analysis
• Restoration of indented handwriting

Forged Documents and Document Examination

In litigation, the outcome often hinges on the evidential value of your proof. The plaintiff holds the burden of proof, while the defendant has the right to challenge the validity of the evidence.

Whether a piece of evidence is admissible depends entirely on whether it has been verified by a professionally qualified expert. If a plaintiff submits a document without proper forensic authentication, the judge may, based on their own discretion, declare it inadmissible, which could ultimately result in the plaintiff losing the case.

Where there is insufficient proof, there is always a risk of defeat.