====== Fingerprint API ======

API that provides functions to scan, extract, and compare fingerprint template data.
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  * [[BS2_ScanFingerprint]]: Scans a fingerprint from a device and extracts template data.
  * [[BS2_ScanFingerprintEx]]:​ Scans a fingerprint from a device and extracts template data and scan image scores.
  * [[BS2_VerifyFingerprint]]: Compares the template data to check if it is the same finger.
  * [[BS2_GetLastFingerprintImage]]: Extracts the image of the last scanned fingerprint using the BS2_ScanFingerprint API.
  * [[BS2_GetFingerTemplateQuality]]: Checks the quality score of the fingerprint from the fingerprint template data.


===== Structure =====

==== BS2Fingerprint ====

<code cpp>
typedef struct {
    uint8_t index;
    uint8_t flag;
    uint8_t reserved[2];
    uint8_t data[BS2_TEMPLATE_PER_FINGER][BS2_FINGER_TEMPLATE_SIZE];
} BS2Fingerprint;
</code>
**1. //index//** \\ 
The index of finger. This is a flag that user can manage manually, not changing automatically. If you want to manage fingerprint index, please assign a number when you enroll fingerprint. \\ \\
**2. //flag//** \\ 
Flag that indicates the purpose of the fingerprint. \\ 
<WRAP group 50%>
^Value ^Description  ^
|0 |Normal fingerprint  |
|1 |Duress fingerprint  |
</WRAP>
**3. //reserved//** \\ 
Reserved space. \\ \\ 
**4. //data//** \\ 
The data of fingerprint template. \\