This mobile application uses the NFC interface allowing:- Open and close lock ND1.- Manage the stock of ND1 locks.- Manage the list of users.- Assign and remove permissions to users on the ND1 locks registered in the application.- Read the battery level.- Program an automatic closing in a personalized way.- Setting the lock time.- Delete the complete list of users of the locks.- Read events of the locks knowing who has operated it and when.It also has auxiliary functions such as:- Make and restore backups with the information contained in the app.- Possibility of sending the password in case of forgetting or loss.- Delete all the complete information of the lock.