BS ISO IEC 11695 — Identification Cards Optical Memory Cards Holographic Recording Method Standard Series (Physical Characteristics and Accessible Optical Area)

💿 BS ISO/IEC 11695 is a holographic recording method standard for optical memory cards developed by ISO/IEC JTC 1/SC 17 (Cards and personal identification) and adopted by the British Standards Institution (BSI) as a UK national standard. This batch includes ISO/IEC 11695-1:2015 (Physical characteristics) and ISO/IEC 11695-2:2015 (Accessible optical area), specifying the physical characteristics and optical-area geometry of optical memory cards that record data holographically.

💡 Holographic recording uses laser interference to record three-dimensional gratings in photosensitive material, offering high storage density, anti-counterfeiting, and one-time writing — an important technology route for high-security identification cards and anti-forgery documents.

1. Series Overview and Positioning 📌

The holographic recording method stores data as holographic gratings in the optical recording layer of the card. It is one of the specific recording methods within the ISO/IEC 11693 optical memory card framework. This series complements the general optical memory card standard (ISO/IEC 11693): 11693 specifies general characteristics and authentication, while 11695 specifies the physical and geometric requirements of this particular holographic implementation path.

Standard	Title	Year	Core Content
BS ISO/IEC 11695-1:2015	Physical characteristics	2015	Holographic card dimensions, construction, physical and durability requirements
BS ISO/IEC 11695-2:2015	Accessible optical area	2015	Dimensions and location of the accessible optical area

⚠️ Both Part 1 and Part 2 of this series supersede and withdraw their 2008 editions. Note also that, per the ISO/IEC foreword note in Part 2, the supersession information in that foreword is acknowledged as inaccurate — rely on the standard body text when citing.

2. Physical Characteristics (Part 1) 📐

Part 1 specifies the physical characteristics of holographic recording optical memory cards, mainly covering:

Dimensions: card height and width shall conform to the ID-1 identification-card size, with thickness within defined tolerances.
Card construction: the layout of the holographic recording layer, substrate, and protective layer.
Physical characteristics: mechanical strength, temperature/humidity resistance, and flexural performance requirements.
Durability: data-retention and service-life requirements of the holographic recording.

💡 The physical stability of the holographic recording layer directly determines data life. Design should focus on environmental adaptability (temperature, humidity, light) and mechanical protection (scratch and flex resistance).

3. Accessible Optical Area (Part 2) 📏

Part 2 specifies the dimensions and location of the accessible optical area on the holographic card:

Defines the boundaries of the region that read/write equipment may access optically.
Gives area dimension parameters (e.g. R, S, T) and their position relative to card edges.
Ensures equipment from different manufacturers can read/write within a unified region, guaranteeing interchangeability.

Requirement	Description	Significance
Area boundary definition	Scope of the accessible optical area	Unified read/write zone
Dimension parameters	Length/width and related parameters	Ensure read/write coverage
Location limits	Position relative to card edges	Equipment positioning compatibility

4. Key Technical Requirements ⚙️

Holographic cards shall meet ID-1 identification-card dimensions and physical characteristics for reader compatibility.
The accessible optical area shall be at the defined position with the defined dimensions to ensure complete read/write coverage.
The holographic recording layer shall meet the specified data-retention and durability requirements.
Manufacturing and personalisation processes must not damage the recording layer or deform the optical area.

⚠️ Holographic recording demands high alignment accuracy between light source and reader. Offset between device positioning and card coordinates can cause read failures; calibrate readers regularly.

5. Engineering Practice 🛠️

High-security documents: passports, identity cards, and driving licences using holographic cards for large-capacity storage and anti-forgery.
Anti-forgery labels and tickets: exploit the non-copyable nature of holograms for product authentication.
Offline large-capacity media: pre-record archives, maps, and other large data sets.
Identity authentication systems: combine holographic authentication and optical reading for fast verification.

6. Frequently Asked Questions ❓

❓ Q: How does a holographic recording card differ from a normal optical memory card?
A: A normal optical memory card records data as dots/barcodes; a holographic card records as holographic gratings, offering higher density and stronger anti-counterfeiting, but requiring more demanding read/write and manufacturing processes.

❓ Q: What is the “accessible optical area”?
A: The accessible optical area is the region of the holographic card that read/write equipment can access optically; its dimensions and location are specified by Part 2 to ensure interchangeability across equipment.

❓ Q: How do Part 1 and Part 2 divide responsibility?
A: Part 1 specifies the physical characteristics (dimensions, construction, durability); Part 2 specifies the dimensions and location of the accessible optical area. Together they guarantee manufacturing quality and device compatibility.

🔍 Q: Which applications suit holographic cards?
A: High-security documents, anti-forgery labels, and offline large-capacity data media — applications demanding both storage capacity and forgery resistance.

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