Digital signatures in Estonia let people do all kinds of things with their computer or phone that they otherwise wouldn't be able to do. A digital signature is kind of like a writing your name with a pen and paper. With a digital signature, you can use the internet and your computer or phone to sign documents instead of writing your name. This lets you do things like file taxes, sign contracts, and do things with the government without having to meet in person. It helps keep you safe and secure when you're doing things online.