Paper shredders have become almost a inevitable appliance in all the offices and government offices where they would like to destroy very sensitive information present in paper. When paper is fed into these paper shredders it cuts them into strips and pieces of paper and none will able to decode what information was present in that paper. There are various types of paper shredders like strip cut, cross cut, particle cut, hammermills, pierce and tear and grinders. They are classified based on the shapes and methods they use to cut paper. Many organizations by law are required to destroy paper that contain information of highest secrecy.