10. The method according to claim 4 , in which storing information further comprises, for at least one initial digital word, an operation for writing in the memory plane at n different addresses n identical modified digital words corresponding to this at least one initial digital word, and wherein said extraction process comprises n extractions carried out on the n modified digital words determining n positions of the modified bit, and in case of a disagreement between the n positions, a majority choice between these n positions.
4. The method according to claim 1 , further comprising an extraction process carried out on the at least one modified digital word and determining the position of the modified bit in the at least one modified digital word.