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Main Purpose Of Digital Signature Explained

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main purpose of digital signature

A digital signature is a cryptographic method for signing electronic records so recipients can verify who signed, whether the file changed, and when the signing event occurred. Its main purpose is to connect identity, document integrity, and signer intent in a way that supports business transactions. In SignNow, that process is paired with audit trails, authentication options, and secure record handling for U.S. workflows under ESIGN and UETA.

why digital signatures matter

The main purpose of digital signature is to prove intent, protect document integrity, and speed business approvals while preserving enforceability under ESIGN and UETA. In SignNow, those records can include audit trails, authentication details, and retention controls that help organizations keep signed files organized and defensible.

Why teams look for DocuSign alternatives

key features of digital signatures

Digital signatures add document integrity, signer attribution, and a clearer audit record, which makes electronic workflows easier to review and manage.

Audit trail

Track every signature event with a visible history of who acted, when they acted, and what changed. That record supports attribution and later review without requiring separate manual logs.

Signer verification

Use authentication choices that help connect a specific signer to each document. Stronger verification creates clearer evidence when the transaction needs to be reviewed later.

Integrity controls

Apply tamper-evident protection so document changes become detectable after signing. This helps preserve record integrity and reduces uncertainty if a file is questioned.

Record retention

Store signed files with structured retention and retrieval options. Centralized record handling makes it easier to locate the final copy, supporting compliance and internal audits.

Cross-device signing

Collect signatures from desktop and mobile devices without changing the legal record. Device flexibility helps teams finish routine approvals without paper or in-person meetings.

Sequential routing

Route documents in a defined order when multiple people must sign or approve. Controlled sequencing helps teams match the signing flow to policy or contract requirements.

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authentication and certificate controls

PKI:

Public key infrastructure

Certificates:

X.509 certificate chain

2FA:

Two-factor authentication

SMS OTP:

SMS OTP support

Identity proofing:

ID verification

Identity binding:

Signer attribution

recommended setup for digital signatures

Use settings that support attribution, record integrity, and retention so signed documents stay defensible and easy to retrieve.

SettingRecommendation
Authentication methodSMS OTP plus email
Signature typeElectronic signature with audit trail
Audit trailEnable full event logging
Document retentionSet 6 years for HIPAA records
EncryptionUse TLS 1.2/1.3 and AES-256

what the audit trail records

The audit trail tracks each signing event so you can verify identity, timing, document integrity, and record history.

01

Signer authentication:

Records signer authentication details and method used.
02

Timestamp capture:

Captures UTC timestamps for each action.
03

Document hashing:

Hashes the document before and after signing.
04

Tamper seal:

Applies a tamper-evident seal to changes.
05

Event history:

Logs delivery, view, sign, and completion events.
06

Audit export:

Exports the audit trail for review or recordkeeping.

processing timeline for digital signatures

Signing workflows usually move quickly once the document is prepared, delivered, and routed to the right recipients.

01

Document preparation

Prepare the document, set signers, and confirm fields before sending.
02

Delivery to signers

Deliver the record by email, link, or app.
03

Signer turnaround

Most recipients sign quickly when the workflow is clear and accessible.
04

Completion and archival

Completion stores the final file, audit trail, and timestamps together.

recordkeeping practices that help

Good recordkeeping keeps signed files usable later, especially when a contract, audit, or compliance review depends on the original signing evidence.

Keep the audit trail together

Export the audit trail with each signed record and store it alongside the final PDF so the record package stays complete during reviews or disputes.

Match retention to the rule

Set retention rules that match the governing framework, such as 6 years for HIPAA records under 45 CFR 164.530(j)(2), and apply them consistently.

Archive securely

Use secure archival with controlled access, encrypted storage, and version discipline so signed files remain readable and defensible after staff or system changes.

Preserve signing evidence

Capture signer consent, authentication method, and completion timestamps for every file so the record can support attribution under ESIGN, UETA, and sector rules.

privacy and workflow pitfalls

  • Teams sometimes neglect signer consent language, which can weaken attribution and create avoidable enforceability questions under ESIGN and UETA.
  • Documents with sensitive personal data can circulate too widely when access controls are not limited to the right reviewers.
  • Retention gaps often appear when signed files and audit trails are stored separately, making later retrieval slower and less reliable.
  • Healthcare and regulated workflows need a BAA, access logs, and timestamps; missing any one of them can complicate compliance reviews.

real-world use cases

These examples show how digital signatures support measurable workflow goals, including speed, control, and document traceability across teams.

Technology distribution

Tech Data needed faster internal and external approvals while keeping customer service workflows coordinated.

  • AirSlate SignNow helped Tech Data speed up to revenue and improve service delivery.

Tech Data uses airSlate SignNow to improve internal and external customer service while increasing speed to revenue. That outcome fits a digital signature workflow that reduces paper handling, keeps approvals moving, and preserves a clear record of who signed and when.

ERP-connected operations

Xerox needed flexible NetSuite-connected signing so documents could move through the right order and format.

  • The workflow had to respect document type, signer order, and format.

Kodi-Marie Evans said airSlate SignNow gave Xerox the flexibility needed to get the right signatures on the right documents, in the right formats, through NetSuite integration. That is a useful example of how digital signature workflows support structured approvals and records at scale.

business types that benefit most

Different organizations use digital signatures for distinct workflows, but the core need stays the same: signed records, traceable approval, and efficient handoff.

  • Solo legal practices use SignNow for NDAs, engagement letters, and client intake packets that need fast turnaround, clear signer attribution, and searchable records without adding extra administrative steps.
  • Healthcare groups use SignNow for consent forms, intake packets, and HIPAA-covered workflows that require controlled access, audit trails, and consistent document handling across desktop and mobile devices.
  • Mid-market operations teams use SignNow with NetSuite, Salesforce, and Google Workspace to route approvals, collect signatures, and keep contract records aligned across finance, sales, and legal teams.

These tasks are executed by both individual contributors and centralized administrators depending on organizational policy and required controls.

roles, permissions, and templates

  • Administration teams use shared templates and delegated sending to keep approvals moving while admins control who can send, edit, or manage workflows.
  • Operations managers rely on role-based permissions and preset templates to reduce errors across recurring contracts, onboarding packets, and internal approvals.

faq and troubleshooting

These questions focus on legality, compliance, retention, and plan fit so you can assess whether a digital signature workflow matches the document at hand.

If a signer says the document was altered, check the audit trail and timestamp history in SignNow. The log helps confirm the signing sequence, file integrity, and signer actions under ESIGN, UETA, and related recordkeeping expectations.

If HIPAA records must be retained, keep signed files and related logs for 6 years under 45 CFR 164.530(j)(2). SignNow can help store the record package, but your retention policy must still be set correctly.

If you need stronger signer identity proof, use two-factor authentication or ID verification instead of only email access. Those options improve attribution and are better suited for sensitive contracts, healthcare records, or regulated forms.

If a workflow needs compliance evidence, the Business, Business Premium, Enterprise, or Site License plan can provide audit trails and authentication controls. HIPAA use also requires a BAA, and some specialized controls depend on the plan.

If a signed PDF will not open cleanly, confirm the file exports as PDF and not as a partially completed draft. Signed records should keep the final PDF, audit trail, and timestamps together for later review.

If a document type is excluded by law, such as a will or certain court orders, use another signing method or follow the applicable state rule. ESIGN and UETA do not override those exclusions.

pricing and feature comparison

Prices and plan details reflect the verified annual-billing snapshot in the provided data, with HelloSign treated as Dropbox Sign.

FeaturesSignNowDocuSignAdobe SignPandaDocHelloSign
Starting price$8/user/mo$15/user/mo$14/user/mo$19/user/mo$15/user/mo
Free trial7-day trialNot verifiedNot verifiedNot verifiedNot verified
Bulk sendBusiness PremiumNot verifiedNot verifiedNot verifiedNot verified
Audit trailIncludedIncludedIncludedIncludedIncluded
HIPAA complianceBAA requiredBAA availableBAA availableNot verifiedNot verified
ROI at a Glance

Key performance indicators that demonstrate SignNow's proven track record.

28M+Documents signed
13+Years in business
4.6/5Average G2 rating
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