The field programmable gate array implementation of the nonlinear resistor-capacitor-inductor shunted Josephson junction model and its application to sEMG signal encryption through image encrypted technique are reported in this study. Thanks to the numerical simulations and FPGA implementation of the NRCISJJ model, different shapes of chaotic attractors are revealed by varying the parameters. The chaotic behaviour found in the NRCISJJ model is used to encrypt the sEMG signal through image encryption technique. The results obtained are interesting and open up many (...) perspectives. (shrink)