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Command Reference
VERIFY FINGERPRINT

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Reference Manual StarSign® Bio Token 3.0/Edition 07.2005

ID No. 

30016576

2.2

VERIFY FINGERPRINT

Scope

 is used to verify a user’s fingerprint. It initiates fin-

gerprint image acquisition, processing and feature extraction. 
The features are sent to the smart card processor for on-card verification 
and the outcome is reported in the response APDU to the host.
The command performs the following:
– Scans an image
– Generates a template and transmits it to the smart card processor, 

where it is compared with the reference template (see ’2.1 ENROLL 
FINGERPRINT’ on page 10) via the VERIFY command.

 

Biometric threshold, retry counter and access rules have to be configured 
in the file system of STARCOS. For details see STARCOS 3.0 reference 
manual edition 06/2005 or later.

Command

P2

Specifies the Key Identifier (KID) used to reference the biometric data 
stored in the smart card processor during the enrollment phase (see ’2.1 
ENROLL FINGERPRINT’ on page 10). 

Response

Status Bytes

This command may return one of the following status bytes.

CLA

INS

P1

P2

’A0’

'20'

’00’

SW1

SW2

’90’

’00’

Code

Description

'90 00'

Successful operation

'63 Cx'

Verifcation failed (x represents the number of remaining re-
tries)

'64 00'

File or data missing; enrollment file corrupt

'69 82'

Security status not satisfied

'69 83'

Authentication method blocked

'69 85'

Conditions of use not satisfied

'6A 82'

Application or file not found

'6A 88'

Referenced data not found

'A7 00'

General ARM7 error

'A7 01'

Unknown instruction