How does a person, who does not have DigiDoc3 client, see digital signatures? Where can you check digital signatures?
1) If you have a card reader and ID-card then you can use DigiDoc portal http://digidoc.ee. Besides checking digital signatures, DigiDoc portal can also be used to digitally sign documents.
2) If you do not have ID-card and/or card reader, then you can open a signed document or check the signature in DigiDocCheck portal http://check.digidoc.ee
DigiDoc3 client can be used to open documents and check signature also in a computer that does not have a card reader. DigiDoc3 client can be installed from https://installer.id.ee/.