> For the complete documentation index, see [llms.txt](https://docs.vida.id/identity-stack/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vida.id/identity-stack/sign/introduction/faq.md).

# FAQ

**1. What is VIDA Sign?**

VIDA Sign is a secure, legally compliant digital signature platform that enables individuals and organizations to sign documents online without printing or physical meetings.

**2. Is VIDA Sign legally valid in Indonesia?**

Yes. VIDA is a registered Certificate Authority (PSrE) under Kominfo, and all digital signatures generated using VIDA Sign are legally binding and compliant with Indonesian e-signature regulations.

**3. What types of documents can I sign with VIDA Sign?**

You can sign contracts, agreements, forms, invoices, government documents, NDAs, and more. VIDA Sign supports PDF format for digital signing.

**4. How is a digital signature different from an electronic signature?**

Digital signatures are encrypted and certificate-based, offering authentication, document integrity, non-repudiation, and legal enforceability. Electronic signatures may simply be scanned images or typed names without cryptographic security.

**5. What is PKI and how does VIDA use it?**

Public Key Infrastructure (PKI) is a security framework used to issue and manage digital certificates. VIDA Sign uses PKI to ensure that signatures are secure, verifiable, and tied to a validated identity.

**6. Does VIDA Sign support biometric verification?**

Yes. VIDA platform can include identity verification steps like facial biometrics before allowing users to sign documents, enhancing security and trust.

**7. Can VIDA Sign be integrated into our existing systems?**

Absolutely. VIDA Sign provides API allow businesses to embed digital signing workflows into web or mobile applications, CRMs, and internal systems.

**8. What is e-Meterai and how does VIDA support it?**

e-Meterai is Indonesia’s official electronic stamp duty. VIDA offers e-Meterai integration as part of signing workflows or through APIs and desktop applications, ensuring compliance with government regulations.

**9. Can I use VIDA Sign on mobile devices?**

Yes. VIDA Sign Platform works on all major platforms including desktops, tablets, and mobile devices through responsive web and SDK-based integrations.

**10. How secure is VIDA Sign?**

VIDA Sign uses industry-standard encryption, secure cloud infrastructure, and complies with global security standards to protect your documents and personal data.

**11. Can multiple people sign a document?**

Yes. VIDA Sign Platform supports multi-party signing workflows with configurable roles, order of signing, and audit trails for each signature. 

Alternatively, our API integration works per signature basis. This means you can create workflow where multiple people sign the same document

**12. Is there an audit trail available?**

Yes. Every document signed with VIDA Sign includes a detailed audit log showing timestamps, IP addresses, authentication steps, and signer information.

**13. How can I start using VIDA Sign?**

You can contact VIDA for a demo, sign up for an account, or start integrating via our API documentation, depending on your needs.

For our ready-to-use platform, head to [VIDA Sign Platform](https://sign.vida.id/)