Okay, so you know how when we have an election, everyone goes to vote and then the people who count the votes have to write down who voted for who? Well, storable voting is a way to make that process easier and safer.
With storable voting, instead of writing down who they voted for on a piece of paper, people use a computer or machine to cast their vote. The computer saves their vote in a special file that can be stored and counted later.
This way, if there are any problems or questions about the votes, they can go back and look at the special file to see who voted for who. It also makes it harder for anyone to cheat or change the votes, because the special file is harder to tamper with than a piece of paper.
So, storable voting is a way to make voting easier and safer by using computers to save the votes in a special file that can be counted and checked later.