Delhi's Duplicate Image Problem: How the Capital Stacks Up Against Mumbai, Seoul and Cairo

Delhi's civic databases are riddled with duplicate images. Tens of thousands of photographs — property records, voter ID scans, ration card portraits — appear twice, sometimes three times, in servers maintained by agencies under the Municipal Corporation of Delhi and the Delhi government's own e-district portal. The problem is not new, but pressure to fix it has sharpened in 2026 as Phase 4 of the Delhi Metro expansion pushes land acquisition paperwork into overdrive, generating fresh document uploads every week.

The timing matters because India's Digital India land records programme set a compliance deadline for all state portals to complete deduplication audits. Redundant image files inflate storage costs, slow retrieval times for frontline staff, and — more seriously — create mismatches in identity verification that can stall welfare payments to residents in areas like Sangam Vihar and Seemapuri, where large populations depend on digitised ration and health records.

Where Delhi Lags Behind Its Peers

Mumbai moved first. The Brihanmumbai Municipal Corporation began a systematic deduplication drive in late 2023, contracting a Pune-based firm to run hash-matching algorithms across its property photograph archive. By mid-2025, the BMC reported clearing roughly 1.2 million duplicate entries from its Unified Property Tax portal — a figure its IT department published in a quarterly disclosure. Delhi has no equivalent public disclosure on the scale of its backlog.

Internationally, the contrast is sharper. Seoul's smart-city office embedded automatic duplicate detection at the point of upload for its resident services platform as far back as 2021, meaning duplicates rarely accumulate in the first place. Cairo's Nile Digital Governance Initiative, launched with World Bank backing in 2022, retrofitted similar checks into its civil registry photo database covering the Greater Cairo governorate. Delhi is still largely in the audit-and-delete phase that those cities completed years ago.

Within Chandni Chowk's ward offices, staff process property dispute files that sometimes contain four separate scans of the same ownership photograph, uploaded at different points in the Doris document management system. The redundancy is not merely inconvenient — it creates conflicting metadata timestamps that solicitors and arbitration panels cite as grounds to delay hearings.

What Delhi's Agencies Are Actually Doing

The Delhi government's Department of Information Technology floated a Request for Proposal in March 2026 for a deduplication and image normalisation solution covering the e-district and Revenue Department portals. The RFP, published on the Delhi government's procurement site, set a project completion target of eighteen months and budgeted the exercise in the range of ₹12 crore to ₹18 crore, according to the published tender document. Bids closed in May; a vendor has not yet been publicly announced.

Separately, the Delhi Metro Rail Corporation has its own land records imaging unit, established specifically to manage the thousands of property photographs required for Phase 4 corridor acquisitions — particularly the Janakpuri West to Krishna Park Extension stretch and the Lajpat Nagar to Saket G-Block section. DMRC has said publicly that it uses automated matching tools for its internal archive, though it operates independently of MCD's broader civic database.

The gap between project-level discipline and city-wide coordination is exactly where experts say Delhi loses ground to Seoul or even Nairobi, where the city's Urban Planning Department integrated a single image registry in 2024 that all departments must query before uploading new photographs. Delhi still has no such centralised registry.

Residents who need to correct mismatched records can file a grievance through the Delhi government's Samadhan portal at itsupport.delhigovt.nic.in, or visit the nearest Tehsildar office — the one serving South Delhi operates out of Mehrauli. Processing times currently run between 21 and 45 working days for image correction requests, according to publicly posted service level commitments on the portal. Once the deduplication vendor is appointed and work begins, IT officials have said that figure should fall. Until then, the filing cabinet — digital or otherwise — remains messier than it needs to be.