Abstract
The increasing reliance on technology in the investigation and prosecutions of crime in South African courts has led to a growing dependence on electronic evidence ranging from CCTV footage and data messages to emails, cloud storage, and social media content. This dissertation critically examines the legal challenges associated with the admissibility and evidential weight of such evidence in criminal trials, using a two-phase framework: phase one addresses the threshold of admissibility, while phase two considers assessment of the evidential weight.
The analysis is grounded in the constitutional imperative of section 35(5) of the Constitution, which prohibits the admission of evidence obtained in violation of the Bill of Rights if such admission would render the trial unfair or compromise the integrity of the justice system. This safeguard interacts with key statutory instruments, including the Electronic Communications and Transactions Act 25 of 2002 (ECTA), the Criminal Procedure Act 51 of 1977, and the Law of Evidence Amendment Act 45 of 1988.
While ECTA provides foundational recognition of electronic evidence, courts continue to rely heavily on traditional evidentiary rules and common law principles. The classification of electronic evidence as real, documentary, or hearsay remains a subject of judicial uncertainty, further complicated by concerns over authenticity, reliability, and the potential for manipulation.
Drawing on comparative insights from Canada, Kenya, the African Union, and the United Nations, the study highlights both global progress and persistent gaps in evidentiary governance. While these jurisdictions have developed robust frameworks for traditional digital formats such as emails, metadata, and surveillance footage, none have yet codified standards for AI-generated content, algorithmic outputs, or synthetic media. This global gap reinforces the urgency for South Africa to proactively address emerging challenges through legislative enhancement, codification of authentication protocols, and improved investigative capacity. These reforms would strengthen both phases of the evidentiary enquiry and promote consistency, fairness, and legal certainty in the digital age.