This disclosure relates to a method for securely transmitting secret information to a user, including receiving by the user terminal, from a secure processor, a software component protected against tampering and reverse-engineering and configured to generate sets of adjacent pixels having a probability lower than 100% to be in a visible or invisible state, executing the software component by the user terminal, at a frame display refresh rate, to generate the pixel sets at the display refresh rate, inserting the pixel sets generated by each execution of the software component into one respective image frame, and activating display of the image frames at the frame display refresh rate, the image frames including information which is machine unintelligible as being formed of the pixel sets, the information becoming intelligible to a user at the display refresh rate based on a human visual system.