/**
* Document data sources.
* @enum {string}
*/
export declare enum eSource {
    /**
    * Machine readable zone (MRZ)
    */
    MRZ = "MRZ",
    /**
    * Visual zone
    */
    VISUAL = "VISUAL",
    /**
    * Barcode
    */
    BARCODE = "BARCODE",
    /**
    * RFID
    */
    RFID = "RFID",
    /**
    * Magnetic
    */
    MAGNETIC = "MAGNETIC",
    /**
    * External
    */
    EXTERNAL = "EXTERNAL"
}