SMART BRACELET WITH ELECTRONIC CIRCUIT FOR MULTIFUNCTION ACTIVITY WITH SMARTPHONE NFC, AND ACTIVITIES FOR AUTHENTICATION COMBINED DATA (CDA) FOR PAYMENTS IN SAFETY AND CONTACTLESS

摘要

The present invention relates to a smart bracelet with a display, buttons and an electronic circuit configured to perform a series of autonomous and wireless connection functions with an NFC smartphone for displaying notifications and for carrying out a combined data authentication (CDA) in order to perform offline safety payments with an NFC contactless smartphone, or to perform online safety payments by means of a software applications (APP) and an NFC contactless smartphone. The smart bracelet comprises a rubber or plastic or leather or metal support, in which an electronic circuit with a microchip and a Bluetooth chip for performing a digital signature of a financial instrument similar to the digital signature stored in the EMV chips of smart cards, is embedded, a display and two buttons. The function of the smart bracelet is to allow the user to display the time, to display notifications of calls, sms, e-mail and social networks messages on the NFC smartphone, to store the digital signature of a financial instrument and the unique secure codes identifying the NFC smartphone and its owner, to generate temporary random codes (DDA) for performing a combined data authentication (CDA) and finally also to communicate with software applications (APP) for settling contactless payments using NFC smartphones.