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 sounds mundane but carries real operational cost: duplicate images stored across public and private databases are wasting server capacity, slowing retrieval systems and, in some cases, creating compliance headaches under data minimisation rules. The conversation gained fresh urgency this year as the city's digital blueprint for 2025–2030 moved from planning documents into active implementation.

The issue sits at the intersection of two pressures bearing down on the city simultaneously. On one side, Hong Kong's Office of the Government Chief Information Officer has been pushing agencies to consolidate legacy systems as part of its broader cloud migration programme. On the other, the Personal Data (Privacy) Ordinance, updated in recent years, places obligations on organisations to avoid retaining unnecessary copies of data — including image files that contain identifiable individuals. Duplicate images, some legal and technology professionals argue, are not just an efficiency problem but a latent compliance risk.

What Experts at Local Institutions Are Warning

At the Hong Kong University of Science and Technology in Clear Water Bay, researchers working on data engineering have flagged that large institutional image libraries — think hospital radiology archives or the Land Registry's property photograph collections — routinely contain duplication rates of 20 to 40 percent by file count, according to findings published in technical literature on archival management. The University of Hong Kong's Faculty of Engineering has similarly highlighted the issue in the context of smart-city sensor networks, where cameras installed along corridors such as Gloucester Road and inside MTR stations generate overlapping frame captures stored in multiple locations.

The Hong Kong Applied Science and Technology Research Institute, based in Pak Shek Kok in the New Territories, has been developing hashing and perceptual-similarity algorithms specifically designed for Cantonese-language document image sets — a niche but commercially significant use case for the city's court filings and property transaction records, which blend Chinese characters with photographs and stamps. Industry practitioners say automated deduplication tools trained on Western-language datasets perform poorly on these mixed-format files, making locally adapted solutions commercially attractive.

The Hong Kong Productivity Council, headquartered in Kowloon Tong, has run workshops this year advising small and medium-sized enterprises on storage-cost reduction. The message at those sessions, according to published programme summaries, is direct: companies maintaining e-commerce product catalogues on platforms serving both Hong Kong and Greater Bay Area customers often hold three to five redundant copies of the same product image across different content delivery nodes, inflating cloud storage bills without any business benefit.

Government Signals and Industry Response

The Digital Policy Office, which took over a range of functions from the Innovation and Technology Bureau, has not yet released a standalone policy directive on image deduplication, but its January 2026 consultation paper on public-sector data quality standards listed redundant file storage as a named inefficiency category targeted for reduction by the end of the 2026–27 financial year. That gives agencies roughly twelve months to demonstrate measurable improvement.

Private-sector response has been mixed. Large financial institutions headquartered in the International Finance Centre and Exchange Square have generally moved faster, driven by the cost discipline of their global parent organisations. Smaller licensed insurers and property agencies in districts like Wan Chai and Mongkok, where back-office IT budgets are tighter, have been slower to act.

Consultants working with Hong Kong's fintech community note that the city's ambition to remain competitive with Singapore as a regional data hub depends partly on demonstrating rigorous data hygiene — an argument that has gained traction with chief information officers who previously treated deduplication as low-priority housekeeping.

For organisations yet to address the problem, practitioners recommend starting with an audit of cloud storage buckets and on-premises file servers before purchasing any specialist tooling. The Hong Kong Productivity Council's next relevant workshop is scheduled for September 2026 at its Kowloon Tong headquarters, and registration details are expected on its website by mid-July.