Functionality: This app allows you to load (or check the balance) of PUBLIC TRANSPORT CARDS of the Madrid Regional Transport Consortium (CRTM), using NFC. Instructions for use: • Check that you have a data connection and activate the NFC connection on your mobile. • Access the CRTM Transport Card APP. • Register the bank card: To carry out a charge, you must first register your bank card. It is not essential that you leave it registered once the upload is finished. • Check the balance and load