Hong Kong's War on Duplicate Images: What Officials, Experts and Key Figures Are Saying

Hong Kong's digital governance community is rallying around a problem that has quietly ballooned inside public-sector databases and private media archives alike: the proliferation of duplicate images clogging storage systems, distorting search results, and in some cases undermining the integrity of official records. The conversation gained new urgency this year as city agencies accelerate digital transformation under the Smart City Blueprint for Hong Kong 2.0, which sets a rolling series of milestones through 2025 and beyond.

The issue is not merely technical housekeeping. Hong Kong's position as a regional financial hub depends increasingly on clean, trustworthy data infrastructure. With Greater Bay Area integration pushing more cross-border data flows through servers physically located in Kwun Tong and Tseung Kwan O, the cost of storing redundant files — and the legal risk of publishing misidentified images — has become a boardroom concern, not just an IT one.

Who Is Talking, and What Are They Saying

At a panel hosted by the Hong Kong Computer Society at its Wanchai offices in May 2026, practitioners from the digital asset management sector described duplicate imagery as one of the top three data-quality failures inside large organisations. The consensus view, according to event materials distributed to attendees, was that perceptual hashing — a technique that generates a fingerprint for each image regardless of minor edits or format changes — has become the industry baseline for detection. The dispute is over what comes next: automated deletion, human review, or quarantine workflows.

The Hong Kong Public Libraries system, which digitised more than 1.2 million photographic items through its Digital Initiatives Programme, has publicly acknowledged that deduplication is an ongoing process rather than a one-time fix. Staff at the City Hall branch and the Central Library on Causeway Bay Road both handle public enquiries about image rights and access, and librarians say patron requests for historical photographs have highlighted cases where the same image exists under multiple catalogue entries with conflicting metadata.

In the private sector, media organisations operating out of the old Southorn Playground district and the newer glass towers of Cyberport have invested in AI-assisted review tools. The appetite for automation is high, but legal advisers caution that fully automated deletion of duplicate images in a news archive carries editorial risk — a technically identical image file may carry different licensing agreements or be tied to separate legal proceedings under Hong Kong's Copyright Ordinance, Cap. 528.

The Numbers Behind the Problem

The scale is significant. Research published by the Hong Kong Applied Science and Technology Research Institute in 2025 suggested that large enterprise image repositories in the city routinely contain duplication rates of between 15 and 30 percent, depending on sector. For a media organisation storing tens of millions of assets, that represents substantial wasted expenditure on storage at Tseung Kwan O data centres, where co-location fees run to several thousand Hong Kong dollars per rack unit per month.

The government's own Innovation and Technology Bureau has flagged data deduplication as part of its broader push to rationalise cloud spending across departments. The Digital Policy Office, established in 2022 following a restructuring of government technology oversight, is understood to be developing procurement guidelines that would require vendors supplying digital asset management systems to demonstrate deduplication capability as a baseline feature — though no finalised circular has yet been gazetted.

Practitioners advise organisations to begin with an audit before deploying any deletion protocol. The recommended steps, as outlined by several consultancies working out of Pacific Place in Admiralty, involve first running a read-only scan to generate a duplication report, then building a tiered retention policy that distinguishes originals from derivatives, and finally scheduling rolling reviews rather than treating deduplication as a project with a single end date. For news organisations specifically, retaining at least one archival copy of every image ever published — even if flagged as a duplicate — is considered best practice under Hong Kong's record-keeping norms. The next major forum on the subject is scheduled for September 2026 at the Hong Kong Convention and Exhibition Centre in Wan Chai, where the Digital Asset Management Association plans to release updated regional guidance.