A method for the transmission of data to a magnetic read head of a payment terminal. The method is implemented by an electronic device capable of generating a magnetic field representative of an encoding of the data to be transmitted, and the transmission of the data includes a plurality of emissions of a same sequence of standardized data. The standardized data is data representative of a payment means and is formatted according to the ISO/IEC 7813 standard. The method further includes transmitting secondary data that are emitted between two successive emissions of the sequence of standardized data.