I looked at many codes on the Internet for a long time. All of the codes that I discovered were either too easy didn't make sense, or just plainly didn't want to do. I ended up making up my own code with absolutely no pattern to it. I did this to make the code very difficult.
This project was very interesting doing. Before this project I did not even know what a code was. While testing the code on people one out of three were able to figure it out. This shows that the code was difficult and only some people could figure it out.