RFID_STATUS WINAPI RFID_FujitsuAreaReadLock	(	RFID_HANDLE32	readerHandle,
		UINT8 *	pTagID,
		UINT32	tagIDLength,
		FUJITSU_AREA_READLOCK_ACCESS_PARAMS *	lpAreaReadLockParams,
		ACCESS_FILTER *	lpAccessFilter,
		ANTENNA_INFO *	lpAntennaInfo,
		LPVOID	rsvd
	)

This function changes the ReadLock flags of upto sixteen Areas in the given AreaGroup of one more Fujitsu 8K tags in the FOV.

Parameters:

`[in]`	readerHandle	Handle to the RFID device.
`[in]`	pTagID	Pointer to the byte array containing Tag ID
`[in]`	tagIDLength	Length of the byte array containing Tag ID
`[in]`	lpAreaReadLockAcessParams	Pointer to FUJITSU_AREA_READLOCK_ACCESS_PARAMS structure containing the BlockGroup's offset and password,Payload Mask and Action which determine the desired states of the sixteen ReadLock flags of the specified AreaGroup.
`[in]`	lpAccessFilter	Pointer to Access filter structure specifying the tag-filter criteria for the current Access operation
`[in]`	lpAntennaInfo	Pointer to ANTENNA_INFO structure specifying the Antenna IDs on which the access operation is to be performed
`[in]`	rsvd	Reserved for future use

Returns:

If the function succeeds the return value is RFID_API_SUCCESS. If the function fails the return value is one of the following:

RFID_API_INVALID_HANDLE Handle provided is invalid
RFID_API_PARAM_ERROR Parameter is invalid.

RFID_ACCESS_FUJITSU_CHANGE_WORDLOCK_FAILED Failed to change WordLock flags on the specified tag(s)

Remarks:: It basically sets/resets/leaves unchanged the WordLock flags of two consecutive words in the User Memory because of which the words become write-locked or unlocked provided the correct BlockGroupPassword is passed.

See also:: See RFID_FujitsuChangeBlockOrAreaGroupPassword

Remarks:

Example:

// Code Snippets for setting/resetting wordLock flags
   UINT8 fujitsu8KtagID[12] = {0x99,0x86,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
   
   RFID_HANDLE32 readerHandle;
   RFID_STATUS rfidStatus = RFID_API_SUCCESS;
   CONNECTION_INFO connectionInfo;
   connectionInfo.version = RFID_API3_5_1;
   if(RFID_API_SUCCESS == RFID_Connect(&readerHandle, TEXT("157.235.207.191"), 0, 0, &connectionInfo))
   {  
           
        FUJITSU_CHANGE_BLOCK_OR_AREA_GROUPPASSWORD_ACCESS_PARAMS fujitsuChangeBlockOrAreaGroupPasswordAccessParams;
                fujitsuChangeBlockOrAreaGroupPasswordAccessParams.blockOrAreaGroupOffset = 0X01;
                fujitsuChangeBlockOrAreaGroupPasswordAccessParams.currentPassword = 0X0;
                fujitsuChangeBlockOrAreaGroupPasswordAccessParams.newPassword = 0x12345678;
//              
//              rfidStatus = RFID_FujitsuChangeBlockOrAreaGroupPassword(readerHandle,fujitsu64KTagID,12,&fujitsuChangeBlockOrAreaGroupPasswordAccessParams,NULL,NULL,NULL);
                if(rfidStatus == RFID_API_SUCCESS)
            {
                        
                        FUJITSU_AREA_READLOCK_ACCESS_PARAMS fujitsuAreaReadLockAccessParams;
                        fujitsuAreaReadLockAccessParams.blockGroupPassword = 0x12345678; 
                        fujitsuAreaReadLockAccessParams.blockOrAreaGroupOffset = 0x01;
                        fujitsuAreaReadLockAccessParams.payloadAction = 0xffff;
                        fujitsuAreaReadLockAccessParams.payloadMask  = 0xf0f0;   //First 512 bytes shall be Read-locked,next 512 bytes shall be untouched,next 512 bytes shall be readlocked and 
                                                                                                                                        // next 512 bytes shall be untouched
                        rfidStatus = RFID_FujitsuAreaReadLock(readerHandle,fujitsu8KTagID,12,&fujitsuAreaReadLockAccessParams,NULL,NULL,NULL);
                        if(rfidStatus == RFID_API_SUCCESS)
                        {
                                READ_ACCESS_PARAMS readAccessParams;
                                readAccessParams.byteCount = 4;
                                readAccessParams.byteOffset = 512;
                                readAccessParams.accessPassword = 0;
                                
                                TAG_DATA* lpTagData = RFID_AllocateTag(readerHandle);
                                rfidStatus = RFID_Read(readerHandle, fujitsu8KTagID, 12, &readAccessParams, NULL, NULL,lpTagData, NULL); // This call will fail
                                readAccessParams.byteOffset = 512+512;
                                rfidStatus = RFID_Read(readerHandle, fujitsu8KTagID, 12, &readAccessParams, NULL, NULL,lpTagData, NULL); // This call will succeed
                                
                                 
            }
            }
                   
           RFID_Disconnect(readerHandle);
   }