# Detect tampered and deepfake Bangladesh NID (National ID) > The Bangladesh National ID is the national identity card for citizens, issued as older paper-laminated cards and, since 2016, as chip-based Smart NID cards. Both generations remain in circulation, so verification has to tell a legitimate older layout from a reprint, and the number length and structure give the first structural test. **Canonical URL:** https://tampercheck.ai/documents-support/bangladesh_nid **API document class:** `bangladesh_nid` **Last updated:** 2026-10-04 --- ## What a genuine Bangladesh NID contains NID numbers appear in three forms: ten digits on Smart NID cards, and thirteen or seventeen digits on older cards. A seventeen-digit number begins with the four-digit birth year, followed by location codes and a personal number, while the thirteen-digit form omits the year. The card prints name in Bangla and English, father's and mother's names, date of birth, photograph, and signature, with the address and barcode data on the back. Names appear in both scripts and transliterations vary, so spelling differences alone prove little. The older and newer generations differ in layout, and a downloaded NID slip is a different artefact from the card, so the checks focus on number length, the birth-year prefix where one exists, and edits to the printed fields. ## How Bangladesh NID forgeries are made ### Number length test Valid numbers run ten, thirteen, or seventeen digits. Any other length points to a mistyped or invented number. ### Birth-year prefix check On seventeen-digit numbers the first four digits are the birth year. A prefix that contradicts the printed date of birth shows the card was assembled. ### Generation consistency Older laminated cards and Smart NIDs follow different layouts. A Smart-NID-style card with a flat printed chip area or barcode region suggests a reprint rather than an issued card. ### Photo and data patching Substituted portraits and edited name, parent, or date lines leave cut-line edges, resolution steps, and sharpening halos that localise the change. ### Bangla and English text alignment Dual-script lines are hard to edit cleanly. Font weight shifts, baseline breaks, or mismatched spacing between the Bangla and English renderings expose retyped fields. ## What TamperCheck checks on a Bangladesh NID TamperCheck runs 200+ forensic checks across three layers and returns a risk score from 0 to 100 with plain-English findings tied to specific regions of the document. These three carry the most weight on this document class. ### Portrait substitution and face-swap analysis The document is isolated from whatever it was photographed on, then the portrait region is assessed against the card surface around it. A pasted or generated face rarely matches the substrate it was placed onto. ### Barcode and QR payload comparison Encoded payloads are decoded and compared against the human-readable values printed alongside them. Editing the visible text without re-encoding the barcode is a common and highly detectable mistake. ### Reference and document number checks Document, account, and reference numbers are checked for issuer format conformance and against every other place the same value appears on the page. ### And many more checks The three above are the layers that carry the most weight on a Bangladesh NID. Every upload runs the full suite of 200+ checks regardless of document class, spanning file structure and metadata, pixel-level forensics, font and text rendering, optical and print characteristics, provenance signals, AI-generation signatures, and many more checks. ## Who verifies a Bangladesh NID, and why Bangladeshi banks, mobile financial services, and eKYC platforms. In each case the document is being used to unlock money, access, or a legal status, which is exactly what makes it worth forging. ## How to verify a Bangladesh NID in 4 steps 1. **Photograph the document.** Capture both sides flat at full resolution so the number, dates, and barcode region survive close analysis. 2. **Read the number.** Count the digits and confirm ten, thirteen, or seventeen, then compare the leading four digits of a seventeen-digit number with the printed birth year. 3. **Match layout to generation.** Check that the layout and any chip or barcode region fit the card generation the number length implies. 4. **Run a forensic check on the file.** TamperCheck runs 200+ forensic checks including number length and prefix checks and patch detection, returning a risk score from 0 to 100 with findings tied to specific regions of the image. ## Frequently asked questions ### How long is a Bangladesh NID number? Smart NID cards carry ten digits, while older cards carry thirteen or seventeen digits. Any other length is a structural red flag. ### Does the NID number encode the birth date? Seventeen-digit numbers begin with the four-digit birth year, which should match the printed date of birth. The thirteen-digit form carries no birth year. ### Why do some NIDs look different? Older paper-laminated cards and chip-based Smart NID cards are both in circulation, and names print in Bangla and English. A downloaded NID slip is also a different artefact from the card itself. ### How does TamperCheck verify a Bangladesh NID? TamperCheck tests the number's length and birth-year prefix against the printed fields, reviews layout against the card generation, and inspects the portrait and text for patching. Uploads run through a single REST endpoint, are processed ephemerally and not stored, and findings tie to specific regions. ## Related document types - TamperCheck Forensic Report: https://tampercheck.ai/documents-support/forensic_analysis_report - Unknown: https://tampercheck.ai/documents-support/unknown --- Try TamperCheck now: https://tampercheck.ai/dashboard · Docs: https://tampercheck.ai/docs · Pricing: https://tampercheck.ai/pricing