Security will tighten over the years. In order to ensure proper authorization communities will move away from relying upon signatures and photo identification. The new medium will be retina scanning. People have the ability to forge signatures and create phony identification; however scanning the retina is a unique way of identifying individuals. Many industries will change and prosper with new security implementations. In the upcoming decades I believe cash will no longer exist. Every person will have an account at the financial institut ....