A method and system for distribution of scrambled data and/or services to at least one master terminal and to at least one slave terminal linked with the master terminal. The method and system transmit to the master terminal a first secret code and transmit to each slave terminal a second secret code in a biunique relationship with the first secret code, and authorize the reception of the data and/or services by a slave terminal only if the first secret code is previously stored in the slave terminal.