PROCESS AND HOST AND COMPUTER SYSTEM FOR CARD-FREE AUTHENTICATION

摘要

A terminal of acceptance (1; 2) transmits a first identification information entered by the user at the terminal of acceptance or prompted by the terminal of acceptance and/or an information derived from first identification information to the central server (3); the central server (3) transmits a user identification message to the telecommunications number assigned to the user identification information, if the user is successfully identified by the central server based on the transmitted first identification information and/or based on the derived information; the terminal of acceptance (1, 2) prompts the user to enter the user identification message transmitted; and the user is authenticated using a second identification information and is authorized to execute the transaction, if the user identification message entered by the user at the terminal of acceptance corresponds to user identification message transmitted by the central server (3).