Which type of signature should you use - and when?
Addo Sign complies with the EU's eIDAS regulation, which outlines the requirements for electronic identification and trust services within the EU. As a business operating in any Nordic or European country, you are obligated to adhere to these requirements.
eIDAS defines three types of electronic signatures that can be used. As a company, it is important to understand the differences between them, so you can choose the solution that provides your business with the desired level of security.
When to use which type?
This is a very relevant question—and it's essential to consider carefully. Below is an overview of when to use each type of signature, based on the level of security, legal requirements, and the risk of disputes.
| Level | Name | Addo Sign | Recommended Use |
|---|---|---|---|
| ES | Electronic Signature | Touch-signing OK button |
Low-risk situations such as acceptance of offers, receipt of documents, and internal approvals. Suitable for informal agreements or internal documents where the burden of proof is low. Not recommended for sensitive or legally binding agreements. |
| AES | Advanced Electronic Signature | MitID MitID Erhverv BankID |
Used when identity verification is needed – e.g. customer consents, HR documents, contracts involving personal data. Suitable for legally relevant documents, consent declarations, and sensitive information where evidentiary value is important, but a qualified signature is not required. |
| QES | Qualified Electronic Signature | MitID MitID Erhverv BankID |
Used for documents with high legal or regulatory importance, such as executive and board decisions, shareholder agreements, public tenders, and real estate transactions. Ideal for documents with high legal value or statutory requirements – e.g. official declarations, land registrations, contracts with high evidentiary demands, and notarized statements. |