Biometrics images for various modalities are represented and exchanged as per the below specifications.
7th May 2021
NFIQ v2.0 has been removed from the supported quality score for fingerprint authentication device
Refer ISO 19794-4:2011 Specifications.
Image Specification
ISO 19794-4:2011 Annex B1
ISO 19794-4:2011 Annex B2
Minimum Resolution
>= 500 native DPI. Higher densities are preferred.
>= 500 native DPI.
Minimum Active Platen Area or Capture area*
>=1.6 x 1.5 inches for 1 to 2 fingers >=3.2 x 2.0 inches for 4 fingers
>=0.5 x 0.65 inches*
Greyscale Density
8 bits (256 grey levels)
8 bits (256 grey levels)
Image Format
JPEG 2000 Lossless
JPEG 2000 Lossy or WSQ
Compression Ratio
Lossless
Up to 15:1
Quality Score
NFIQ v2.0
NFIQ v1.0
Capture Mode
Auto Capture
Auto Capture
Preview
> 3 FPS M-JPEG frames with NFIQ 2.0 score superimposed
Not Applicable
ESD
>= 8kv
>= 8kv
EMC Compliance
FCC class A or equivalent
FCC class A or equivalent
Operating Temperature*
0 to 50 °C
0 to 50 °C
FTM**
SBI 1.0 - Use host based security (and above)
SBI 2.0 - FTM supported security
* MOSIP adopters can change this if needed. ** Please refer SBI specification documentation.
RRefer to ISO 19794-6:2011 Specifications.
Image Specification
ISO 19794-6:2011 Annex B
ISO 19794-6:2011 Annex B
Minimum Iris Diameter
>=210 pixels
>=150 pixels
Grey Scale Density
8 bits (256 grey levels)
8 bits (256 grey levels)
Spatial Resolution
>=60% @ 2Lp/mm
>= 50% @ 1Lp/mm
Pixel Resolution
>10 pixels/mm
>10 pixels/mm
Capture Distance
>=10CM
>=10CM
Imaging Wavelength
Approximately 700-900 nm
Approximately 700-900 nm
Illumination
The eye should be illuminated using infrared or any other source that could produce high-quality gray scale image
The eye should be illuminated using infrared or any other source that could produce high-quality gray scale image
Image Format
IMAGE_TYPE_VGA (K2) OR IMAGE_TYPE_CROPPED (K3)
IMAGE_TYPE_CROPPED_AND_MASKED (K7)
Compression
JPEG 2000 Lossless
JPEG 2000 Lossy
Compression Ratio
Lossless
Up to 15:1 (>= 3.5 KB)
Aspect Ratio
1:1
1:1
Capture Mode
Auto Capture
Auto Capture
Scan Type
Progressive
Progressive
Preview
>= 3 FPS M-JPEG frames with quality score superimposed
Not Applicable
EMC compliance
FCC Class A or equivalent
FCC Class A or equivalent
Operating Temperature*
0 to 50 °C
0 to °50 C
FTM**
SBI 1.0 - Use host-based security (and above)
SBI 2.0 - FTM supported security
* MOSIP adopters can change this if needed. ** Please refer SBI specification documentation.
Refer ISO 19794-5:2011 Specifications.
Image Specification
ISO/IEC 19794-5:2011
ISO/IEC 19794-5:2011
Camera Specification
1080p with 90 degree FoV or above
720p or above
Skin Tone
All
All
Exception Image Specification
Full Frontal with FACE features, two palms next to the face, waist up photo. 60mm(width) X 40mm(height)
Not Applicable
Image quality
ICAO - Full frontal image, +/- 5 degrees rotation, 24 bit RGB, white background 35 mm(width) X 45mm(height)
ICAO is not mandated
Image format
JPEG 2000 Lossless
JPEG 2000 Lossy
Compression Ratio
Lossless
Up to 15:1
EMC compliance
FCC Class A or equivalent
FCC Class A or equivalent
Operation Temperature*
0 to 50 °C
0 to 50 °C
FTM**
SBI 1.0 - Use host based security (and above)
SBI 2.0 - FTM supported security
* MOSIP adopters can change this if needed. ** Please refer SBI specification documentation.
Capture Time across modalities should be less than 4 Seconds (time taken for providing a final capture response to the calling application, when the biometrics are well placed on the sensors)
We recommend that countries look at ergonomics, accessibility, ease of usage, and common availability of devices while choosing devices for use in registration and authentication scenarios.
The biometric data is wrapped in CBEFF XML.
Providing unique identity for a resident is one of key features of any identity platform. To achieve this, MOSIP interfaces with an Automated Biometric Identification System (ABIS) to perform de-duplication of a resident's biometric data.
MOSIP is designed to integrate with multiple ABISs to leverage expertise of different ABIS providers. A country may use one ABIS for fingerprint and another for Iris or use multiple ABISs for the same biometric data and evaluate the best ABIS based on de-duplication quality.
The ABIS system never comes to know about resident's identity. Any Personally Identifiable Information (PII) such as demographic details or RID (Request ID for Registration) is not shared with the ABIS system. Internally, MOSIP maintains a mapping between the ABIS specific referenceID and RID of the resident.
ABIS is used for 1:N de-duplication. For 1:1 authentication Biometric SDK is used. MOSIP does not recommend using an ABIS for 1:1 authentication.
MOSIP's ABIS middle-ware has the following components
MOSIP ABIS request handler
Request router (based on routing policy, an ABIS request is routed to the correct ABIS system)
ABIS response handler
Below is the MOSIP ABIS middle-ware process flow,
MOSIP interacts with ABIS only via message queues. JSON format is used for all control messages in the queue. MOSIP ABIS middle-ware sends requests to inbound queue address and receives responses from outbound queue address. For details refer to the ABIS API Specifications.
ABIS must support the following types of biometric images:
Individual fingerprint images (segmented)
Iris images (left, right)
Face image
Biometrics data in MOSIP is exchanged as per formats defined in Biometric Specification.
ABIS must comply to ABIS API Specifications.
The queues can be configured in RegistrationProcessorAbis-env.json file.
ABIS system connects to the queues using a pre-defined user id and password.
It is recommended that ABIS is deployed in a secure zone (military zone).
ABIS system is not recommended to connect to any external network.