FakeIDet: Exploring Patches for Privacy-Preserving Fake ID Detection

• URL: http://arxiv.org/abs/2504.07761v2
• Date: Fri, 01 Aug 2025 14:48:23 GMT
• Title: FakeIDet: Exploring Patches for Privacy-Preserving Fake ID Detection
• Authors: Javier Muñoz-Haro, Ruben Tolosana, Ruben Vera-Rodriguez, Aythami Morales, Julian Fierrez,
• Abstract summary: This study focuses on the topic of fake ID detection, covering several limitations in the field.<n>There are no publicly available data from real IDs for proper research in this area.<n>Most published studies rely on proprietary internal databases that are not available for privacy reasons.
• Score: 12.969417519807322
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Verifying the authenticity of identity documents (IDs) has become a critical challenge for real-life applications such as digital banking, crypto-exchanges, renting, etc. This study focuses on the topic of fake ID detection, covering several limitations in the field. In particular, there are no publicly available data from real IDs for proper research in this area, and most published studies rely on proprietary internal databases that are not available for privacy reasons. In order to advance this critical challenge of real data scarcity that makes it so difficult to advance the technology of machine learning-based fake ID detection, we introduce a new patch-based methodology that trades off privacy and performance, and propose a novel patch-wise approach for privacy-aware fake ID detection: FakeIDet. In our experiments, we explore: i) two levels of anonymization for an ID (i.e., fully- and pseudo-anonymized), and ii) different patch size configurations, varying the amount of sensitive data visible in the patch image. State-of-the-art methods, such as vision transformers and foundation models, are considered as backbones. Our results show that, on an unseen database (DLC-2021), our proposal for fake ID detection achieves 13.91% and 0% EERs at the patch and the whole ID level, showing a good generalization to other databases. In addition to the path-based methodology introduced and the new FakeIDet method based on it, another key contribution of our article is the release of the first publicly available database that contains 48,400 patches from real and fake IDs, called FakeIDet-db, together with the experimental framework.

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