ENCODING INSTRUMENT FOR MANUALLY RECORDING SENSIBLE PERSONAL ALPHANUMERIC CODES

摘要

An encoding/decoding instrument for manually recording alphanumeric personal codes in clear but decipherable or readable only by knowing a read key self-attributed by the user, is constituted by at least a first field (3) divided in a certain number of boxes aligned along a first direction, each box containing an alphanumeric character and by at least two rectangular matrices (1, 2) of writable boxes juxtaposed to said first field and a first dimension of which in terms of number of boxes is the same of the first field. The personal alphanumeric codes are writable character by character in as many boxes of the distinct matrices of boxes by splitting the characters of the alphanumeric code in a first segment of characters written in boxes aligned along the direction orthogonal to the first direction of a first matrix and in one or more segments of characters written in similarly orthogonally aligned boxes of the other matrices.