Cashless society can be one of the biggest innovation. Bitcoin is like a virtual money, we can use bitcoin for our daily lives if bitcoin will be legal. Legalization of bitcoin is one of the hardest part, giving the bitcoin is legal. We need to have bitcoin also be secured. A lot of illegal way which bitcoin can do. A lot of hackers, scams, and other ways for stealing bitcoin can be one of the obstacle to be legalized the bitcoins.