The Identity Fraud Threat in Bangladesh Photocopy Shops
In Bangladesh, citizens routinely submit photocopies of their National Identity Card (NID), Smart Card, Driving License, or Student ID for everyday transactions:
- Opening bank accounts and MFS accounts (bKash, Nagad, Rocket).
- Biometric SIM card registration and verification.
- Apartment tenancy agreements and police tenant verification forms.
- Job applications and school admissions.
Unfortunately, thousands of plain, un-watermarked NID photocopies circulate unprotected. Fraudulent syndicates can easily reuse a plain photocopy to register unverified SIM cards or open dummy accounts.
The safest preventive measure recommended by cybersecurity experts and Bangladesh Police is diagonal purpose-bound watermarking across the card photocopy, ensuring it cannot be repurposed for any unauthorized service.
1. Physical Specifications: CR80 Standards vs. ISO 216 A4
An authentic smart ID card follows the global ISO/IEC 7810 ID-1 (CR80) standard:
- Card Physical Width: 85.60 mm (3.370 inches)
- Card Physical Height: 53.98 mm (2.125 inches)
- Aspect Ratio: 1.5858 : 1
- A4 Sheet Dimensions: 210 mm × 297 mm (ISO 216)
When printing both Front and Back on an A4 sheet at standard print resolution (150 to 300 DPI):
CR80 Card at 150 DPI: 506 px × 319 px
CR80 Card at 300 DPI: 1012 px × 638 px
A4 Sheet at 150 DPI: 1240 px × 1754 px
A4 Sheet at 300 DPI: 2480 px × 3508 px
Aligning both cards side-by-side or top-to-bottom with a 60px margin creates an official, clean layout ready for single-click laser or inkjet printing.
2. Anatomy of an Effective Anti-Misuse Security Watermark
An effective watermark must balance two competing constraints:
- Legibility: Officials must clearly read the citizen's name, parent's names, date of birth, and NID number.
- Tamper-Resistance: An attacker should not be able to wipe the watermark using simple paint or erase tools without destroying the card details underneath.
[Recommended Watermark Format]
"শুধুমাত্র ব্র্যাক ব্যাংক একাউন্ট খোলার জন্য প্রযোজ্য — অন্য কোনো কাজে ব্যবহার নিষিদ্ধ"
[তারিখ: ১৫/১১/২০২৬]
Watermark Technical Parameters:
- Angle: -25 degrees diagonal across the card surface.
- Opacity: 25% to 35% alpha channel (
globalAlpha = 0.28). - Color: High-visibility crimson red (
#DC2626) or dark charcoal (#1F2937). - Timestamping: Including the exact date of submission ensures that old copies cannot be used years later.
3. Interactive Web Studio: Try It Free
You can use the built-in, 100% private client-side studio right now inside THE SABBiR OS:
- Studio Route:
/tools/id-card-stitcher - Features: Drag-and-drop front and back photos, choose Side-by-Side or Top-to-Bottom, select preset watermarks (Bank, SIM, Rent, Job, Visa), and export a print-ready A4 PDF/PNG in seconds.