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# 6.4.0

In this Version, the liveness check and facial extraction engines have been updated.

### Added

* Signature of the .NET DLL.
* Rest-Api service configuration file (port, threads, Timeout, keep alive).

### Corrected

* Vulnerabilities in logs.

### Removed

* Command line options of the Rest-Api service `-threads`, `-timeout`, `-kAlive`.

### Changed

* Updated liveness check engine.
* Updated facial extraction engine.