People have been saying bitcoin here, but without spelling it out. Bitcoin is digital money. One of the most important properties is that you don't have to trust any other party to protect it for you. This makes it similar to cash. If you have cash in your teapot, someone has to physically force their way into your home to seize the cash. If your money is all digital in banks, it can be easily seized or frozen by the bank or the government. With bitcoin, you have digital money that cannot be easily siezed or lost due to a failure of some organization.
Unfortunately, nobody knows how to make it scale yet where it will be usable by a large number of people and still maintain this "trustless" quality. Hopefully all of the smart people currently working on the scalability issues will solve this problem and we can move to a digital cash future.
Unfortunately, nobody knows how to make it scale yet where it will be usable by a large number of people and still maintain this "trustless" quality. Hopefully all of the smart people currently working on the scalability issues will solve this problem and we can move to a digital cash future.