> For the complete documentation index, see [llms.txt](https://guide.signspace.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.signspace.com/en/managing-signing-requests/alternative-signature-levels.md).
# Alternative signature levels
### Identity verification levels
The SignSpace service offers three different levels of identity verification. The creator of the signature request selects the appropriate verification level for each request from the advanced settings.
**Strong level**
If the **Strong** level is selected, the signer must authenticate using strong electronic identification. This is done through the [Signicat](https://www.signicat.com/) identification service, which is approved by the Finnish National Cyber Security Centre. Identity can be verified using an electronic ID issued in Finland, Sweden, Norway, Estonia, Latvia, or Lithuania. This requires the signer to use online banking credentials, a mobile ID, or Smart ID.
**Light level**
The **Light** level requires identity verification via email:
* Registered users have verified their email addresses when creating their accounts and will sign in by logging into the service.
* Users who do not have a SignSpace account, or who sign documents without logging in, will receive a one-time security code via email.
The Light level is faster and more user-friendly, but provides a lower level of identity assurance. If strong verification of the signer's identity is required, the Strong level is recommended.
**Ultralight level**
The **Ultralight** level is suitable for cases where lighter verification is sufficient, and speed and ease of use are a priority. In this case, the user is identified through a verified email address or phone number, without a separate security code.
### Define different verification levels for each signer
You can assign an appropriate identity verification level for each signer individually by selecting the desired level from the list in the signature request.
{% hint style="success" %}
If strong authentication is not required for signers within your own organisation, you can assign them the Light level, and use the Strong level for external signers. This makes the signing process easier for your internal users while ensuring compliance for external parties.
{% endhint %}
All signatures created in the SignSpace service comply with the eIDAS Regulation (EU) No. 910/2014.\
For more information on the security and legal validity of electronic signatures, visit:\
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