public async Task <Boolean> sendPendingNFCs()
        {
            List <List <String> > localTags = dBFacade.getLocalStorageNFCs();
            List <NFC>            nfcs      = new List <NFC>();

            nfcCheck = false;
            foreach (List <String> tags in localTags)
            {
                double  presentLatitude  = Convert.ToDouble(tags[0]);
                double  presentLongitude = Convert.ToDouble(tags[1]);
                Address address          = await dBFacade.getAddress(tags[2]);

                double        targetLatitude    = address.Latitude;
                double        targetLongtitude  = address.Longtitude;
                GeoCoordinate presentCoordinate = new GeoCoordinate(presentLatitude, presentLongitude);
                GeoCoordinate targetCoordinate  = new GeoCoordinate(targetLatitude, targetLongtitude);
                nfcs.Add(checkNFC(presentCoordinate, targetCoordinate, address.AddressName));
            }
            nfcCheck = await dBFacade.createNFCs(nfcs);

            if (nfcCheck)
            {
                return(dBFacade.removeLocalStorageNFCs());
            }
            return(nfcCheck);
        }