How to Get Class 3 Digital Signature

TL;DR

Class 3 digital signatures are higher-assurance certificate-based signatures often required for regulated transactions or cross-border compliance. This guide explains what a class 3 certificate is, how identity verification works, practical steps to request and install one, and how to use signNow to apply certificate-based or advanced eSignatures, manage workflows, and keep compliant records under U.S. laws such as ESIGN and UETA.

What a Class 3 Signature Means

A class 3 digital signature is a certificate-backed electronic signature that links a verified identity to a signed document, similar to a stamped ID card used when signing paper. At a basic level it proves who signed and that the signature came from an authenticated certificate. Technically, class 3 indicates a high-assurance certificate with strict identity checks and often stronger cryptographic protection. In practice, organizations use these for high-risk contracts, regulated filings, or cross-border transactions that require certificate authentication and tamper-evident records.

Legal Validity and Use

Class 3 certificates add identity assurance and non-repudiation that can support legal defensibility under ESIGN and UETA. Use signNow when closing remote sales contracts or collecting employee onboarding signatures at scale. They also help meet internal compliance, audit, and industry requirements where stronger signer authentication is needed.

Common Challenges

• Identity verification can delay issuance when applicants lack acceptable ID documents or live in regions lacking trusted registrars.
• Integrating certificate-based signatures with existing workflows may require IT configuration or a Site License for advanced authentication.
• Cross-border acceptance varies: some countries or regulators expect eIDAS-qualified levels while others accept ESIGN/UETA evidence.
• Managing private keys and certificate renewal requires disciplined key storage, rotation, and institutional policies to avoid signature failures.

Who Needs Class 3 Signatures

Organizations and roles that handle high-value or regulated transactions often require certificate-based signatures for added assurance.

• Real Estate and Title companies that need strong identity proof on closings and remote notarizations.
• Healthcare and Medical practices for HIPAA-sensitive consents and provider attestations requiring strict audit trails.
• Finance, Banking, and Legal teams when regulatory filings or compliance demands stronger signer identity verification.

Many enterprises combine certificate-based signatures with signNow workflows to balance security, speed, and auditability across departments.

Representative User Profiles

IT Administrator

An IT Administrator configures certificate trust stores, deploys signNow integrations, and manages SSO or Site License settings. They ensure certificate import, key storage policies, and API authentication are set up for secure automated signing across the organization.

Legal Counsel

A Legal Counsel defines signature acceptance criteria, documents proof-of-signing requirements, and reviews certificate lifecycle policies. They rely on signNow audit trails and certificate evidence when preparing contract risk analyses and regulatory reports.

Security and Compliance Facts

In-transit Encryption: TLS 1.2/1.3

At-rest Encryption: AES-256 encryption

Data Protection Standards: GDPR compliant

Audit and Controls: SOC 2 Type II

Regulatory Support: 21 CFR Part 11

Healthcare Compliance: HIPAA (BAA required)

Risks of Poor Implementation

Invalid Signatures: Improper identity verification

Legal Exposure: Weak evidence in disputes

Operational Delays: Certificate issuance delays

Data Breach Risk: Mismanaged private keys

Noncompliance: Regulatory penalties possible

Integration Failures: Workflow interruptions

Real-World Examples

Two customer scenarios illustrate how certificate-based signing and signNow workflows work in practice.

Optica Ventures

Optica Ventures streamlined investor agreements with certificate-backed signatures and signNow templates

• They used verifier checks and stored certificate evidence alongside documents
• This reduced turnaround and clarified signer identity

Resulting in faster closings and clearer audit records for future compliance reviews.

Fertility Centers

Fertility Centers of Illinois needed HIPAA-compliant signatures and tracked all consents in signNow

• They used strict identity verification and BAA-covered workflows
• Documents included full audit trails, signed timestamps, and certificate references

Ensures regulatory readiness and improved patient consent management while preserving secure records.

Step-by-Step Setup

A clear sequence to obtain a class 3 certificate and use it with signNow for certificate-based eSigning.

• 01
  Request Certificate: Contact a trusted certificate authority and submit identity documents for a class 3 certificate request with verified ID.
• 02
  Complete Verification: Complete in-person or remote ID checks as required by the certificate authority to validate your identity and enrollment.
• 03
  Install Certificate: Import the issued certificate to your device or secure HSM and confirm the private key is protected and accessible to signNow where needed.
• 04
  Apply in signNow: Configure signNow signer authentication to use the installed certificate or enable Site License advanced signing options before sending documents for signing.

Preparing Documents for Signing

Prepare documents so certificate-based or advanced eSignatures capture identity, intent, and tamper-evidence in signNow workflows.

• Upload File: Open signNow and upload PDF or Word file into the document editor.
• Add Fields: Place signature and date fields and assign signer roles with email or certificate binding.
• Set Authentication: Choose certificate-based or two-factor authentication options in signer settings.
• Send for eSign: Send the document for eSign and monitor completion using signNow status tracking.

Core Capabilities for Class 3 Use

Key features to support class 3 signatures, certificate usage, and enterprise signing workflows within signNow.

Certificate Signing

Support for certificate-backed signatures where Site License options enable advanced digital certificate usage and evidence capture tied to signer identity and cryptographic keys.

Audit Trail

Fully detailed, tamper-evident audit logs capture signer IP, timestamps, and certificate metadata for legal defensibility and internal compliance review.

Bulk Send

Send identical documents to many recipients with personalized fields, improving throughput for mass agreements while preserving individual signature evidence.

Mobile Signing

Native mobile apps allow signers to complete forms and apply signatures on iOS or Android with the same auditability and security controls as the web.

Advanced Features and Integrations

Additional capabilities that organizations leverage when implementing high-assurance signing processes and certificate workflows.

SSO Support

Integrate SSO for centralized user management and authentication consistency across signNow.

API Access

Use signNow APIs for automated signing, certificate application, and document lifecycle control.

NetSuite Integration

Embed signing flows into NetSuite records to reduce manual steps and keep contracts attached to transactions.

Box and Drive

Connect cloud storage for automatic document archiving and retrieval post-signature.

Conditional Fields

Show or hide fields based on signer input to reduce errors and streamline forms for signers.

Request Payments

Collect payments during signing for agreements that require immediate settlement along with signed consent.

Best Practices for Implementation

Practical recommendations to acquire, deploy, and maintain class 3 certificates and certificate-based signing in signNow workflows.

Establish Clear ID Policies

Define acceptable identity documents and verification methods up front, and require the certificate authority to follow the documented proofing standards to reduce issuance delays.

Protect Private Keys

Store private keys in a hardware security module or secure key store; limit access and rotate keys on a defined lifecycle schedule to prevent compromise.

Use Audit Trails

Capture and retain signNow audit logs, certificate metadata, and signer authentication evidence for the duration required by your retention policy and regulatory obligations.

Test Workflows

Pilot certificate-based signing on a subset of documents, verify cross-platform acceptance, and train legal, HR, and operations teams before broad rollout.

Devices and Platform Requirements

Basic browser, mobile, and integration requirements ensure reliable certificate-based signing with signNow.

• Browsers Supported: Modern Chrome/Edge
• Mobile Apps: iOS and Android
• Site License: Required for QES

For certificate-based or advanced eSignature levels, use up-to-date browsers or the signNow mobile app and consider the Site License to enable enterprise features and stronger signer authentication across systems.

Typical Workflow Configuration

Example settings to configure a certificate-backed signing workflow in signNow for high-assurance documents.

Feature	Value
Signer Authentication	Certificate or 2FA
Reminder Frequency	48 hours
Retention Period	7 years
Audit Storage	Secure cloud
Certificate Source	Trusted CA

Feature Comparison Snapshot

Quick availability and capability comparison between signNow and two leading competitors for certificate and enterprise signing.

Plan / Feature	signNow	DocuSign	Adobe Sign
Certificate signing support	yes, site license	yes, advanced	yes, advanced
Bulk send availability	yes, premium plan	yes, business plans	yes, business plans
Audit trail detail	full, tamper-evident	full, tamper-evident	full, tamper-evident
Envelope cap	no cap	100 envelopes/year	no cap

Pricing and Feature Comparison

Pricing snapshot (annual billing) and feature presence as of current data; values are concise for quick comparison.

	$8/user/mo	$8/user/mo	$13/user/mo	$19/user/mo	$15/user/mo
Free Trial	7-day free trial	Yes, free trial	Yes, free trial	Yes, free trial	Yes, free trial
Bulk Send	Yes, Premium plan	Yes, paid plans	Yes, paid plans	Yes, paid plans	Yes, paid plans
Audit Trail	Yes, full audit trail	Yes, full audit trail	Yes, full audit trail	Yes, full audit trail	Yes, full audit trail
HIPAA Compliant	Yes, BAA required	Yes, BAA available	Yes, BAA available	Contact sales	Contact sales
Envelope Cap	No envelope cap	100 envelopes/user/year	No envelope cap	No envelope cap	No envelope cap

FAQs About How to Get Class 3 Digital Signature

Answers to common questions when obtaining a class 3 certificate and applying it within signNow workflows.

• How long does issuance take
  Issuance varies by CA and proofing method; remote identity verification can take from the same day to several business days depending on document quality and the certificate authority's processes. Plan for verification time when calendaring signing deadlines.
• What identity documents work
  Most CAs accept government-issued photo IDs, passports, or equivalent documents. Some issuers require notarization or in-person verification. Confirm required document list with your chosen certificate authority before submitting an application to avoid rejections.
• How do I use the certificate in signNow
  Install the certificate on the signer device or connect an HSM and configure signNow to reference the certificate or enable Site License advanced signing. Then assign certificate-based authentication to signer fields before sending.
• What if signer loses private key
  If a private key is lost or compromised, revoke the certificate immediately with the issuing CA, reissue a new certificate after verification, and consult legal/IT teams about the impact on previously signed documents.
• Do certificates expire
  Yes, certificates have expiration dates set by the certificate authority. Track renewal windows, renew before expiry, and update workflows to reference current certificates to avoid signing interruptions.
• Is signNow compliant for regulated use
  signNow supports ESIGN and UETA compliance, SOC 2 Type II, HIPAA (with BAA), 21 CFR Part 11 controls, and encryption standards required for regulated document handling.