Just remember that you can only create digital signatures if you have an ID-card, mobile-ID or Smart-ID.
Digital signing in RIA DigiDoc mobile application
Digitally signing documents with the RIA DigiDoc mobile app is very easy for mobile-ID, Smart-ID and ID-card users. Step-by-step instructions.
You wish to add a digital signature using a computer
Digital signing is very simple.
Firstly, you need to know which tool you want to use for signing: your ID-card or mobile-ID. After that, launch DigiDoc4.