A exampe includes all calculations A few assumptions are that the calculations performed in the encoding method are correct and do not contain any mathematical errors. Another assumption being made is that the graphic calculator settings used are correct and the does not contain any errors or glitches and that the equations entered into the program are correct. The limitations faced in this investigation include the following. Firstly, The alphanumeric code chosen contain the character for a space and any punctuation marks such as question mark. Due to punctuation, the decoder may be incorrectly decrypted the true meaning of the message. In addition, the final letter, was used to fill in empty elements in the matrix to complete it . This could render the message even harder to read as sometimes new words can be formed by addition of letters. if this method was used to decode a large script, the intended reader would take a very long time to decode the message and more essentially, have a very hard time understanding what the message means due to the grammar. To tackle this issue, additions of capital letters, punctuation marks, to the alphanumeric system will need to be considered. Another limitation is that the scramble matrix has to be multipliable by the packets of data and so both have to contain dimensions of corresponding rows to columns or vice versa to satisfy this. The amount of characters that can be encoded is unlimited; however, as mentioned above, the major limitation is the lack of punctuation which could render the decoded message incomprehensible by the intended reader. Therefore, this method is reasonable to be used for the encryption of small messages of 1-4 words but the alphanumeric system will need to be improved to accommodate larger passages of script. In relation to the results obtained, all calculations of matrix algebra were performed on the Casio fx-CG20 AU graphics calculator.