Create Digital Signature in Adobe Acrobat Pro with signNow
Award-winning eSignature solution
What digital signatures do in Acrobat Pro
A digital signature in Adobe Acrobat Pro is a cryptographic signature that verifies who signed a PDF and whether the file changed after signing. It works by creating a hash of the document, then binding that hash to the signer’s certificate and private key. When someone opens the file, the software checks the certificate chain, the signature status, and the document integrity. In U.S. business use, this helps preserve identity, intent, and tamper evidence in a single signed record.
Why digital signatures matter
They reduce paper handling, speed approvals, and preserve evidence of signer intent. Under ESIGN and UETA, properly executed electronic signatures can be enforceable, and a digital signature adds stronger integrity and attribution controls for business records.
Common digital signature issues
Users often confuse a drawn signature with a cryptographic digital signature, which can weaken integrity claims. Expired or untrusted certificates can trigger validation warnings and make recipients question the signed PDF. Poor signer authentication can leave attribution disputes if the document is challenged later. Missing retention or audit records can make it harder to prove who signed, when, and from where.
Who uses digital signatures
Business documents
Legal teams, finance staff, and operations groups use digital signatures for contracts, approvals, and policy records.
Regulated workflows
Healthcare, real estate, and education teams use them for consent forms, leases, and enrollment packets.
Users who benefit most
A director of NetSuite operations at a large manufacturer uses digital signatures to route the right document to the right approver, keep records aligned with system data, and reduce manual follow-up across departments. A COO at a service business uses digital signatures to speed customer-facing agreements, keep the signing process simple for clients, and maintain a clear record of approvals across mobile and desktop workflows.
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Core features and benefits
Digital signatures in signNow help teams verify identity, preserve document integrity, and keep approval workflows organized across everyday business records.
Certificate check
Create a signed PDF with certificate-based verification, so recipients can confirm the signer and detect later changes to the file.
Tamper evidence
Keep a tamper-evident record that helps support document integrity and later review in business or regulated workflows.
Signer identity
Use signer authentication controls to reduce attribution disputes and strengthen the link between the person and the signature.
Audit history
Store a clear signing history that shows key events, timestamps, and document actions in sequence.
Cross-device use
Support mobile and desktop signing so teams can complete approvals without changing their device or location.
Template reuse
Reuse templates for recurring PDFs, which cuts repeated setup work and keeps signature steps consistent.
How the signing flow works
The signing process follows a short sequence that connects identity, document integrity, and final record storage.
Prepare file: signNow prepares the PDF and signing order. Verify signer: The signer authenticates and opens the document. Sign and seal: The system applies the signature and seals the file. Save record: The completed PDF and audit record are stored.
Quick setup steps
Use a short setup sequence to prepare a PDF, assign signers, and collect the completed record.
Upload file:
Upload the PDF you want signed. Add fields:
Place signature fields where needed. Send request:
Enter signer details and send the request. Review result:
Review the completed signed document.
Recommended workflow settings
A controlled setup helps preserve identity, integrity, and retention evidence for business, healthcare, and other regulated PDF workflows.
| Setting | Recommendation |
|---|---|
| Authentication method | SMS OTP with ID review |
| Signature type | Certificate-based digital signature |
| Audit trail | Enable time-stamped event logging |
| Document retention | 6 years for HIPAA records |
| Encryption | TLS 1.2/1.3 and AES-256 |
Platform and device support
Use a modern browser or mobile app with secure TLS access to create and verify digital signatures on PDFs.
Desktop browsers Chrome, Firefox, Edge, and Safari on Windows or macOS. Mobile devices iOS and Android mobile apps support signing on phones and tablets. Network security TLS 1.2 or TLS 1.3 is required for secure web access.
For enterprise deployment, managed devices, SSO, and controlled certificate handling help keep signing workflows consistent across teams. Windows, macOS, iOS, and Android are all relevant when users sign from office, home, or mobile environments.
Security and compliance controls
Transport security:
Storage encryption:
Control assurance:
Security management:
Healthcare compliance:
Privacy and trust:
Real-world signing examples
These examples show how teams use signNow to manage signatures, document flow, and compliance-sensitive records in practical settings.
Manufacturing operations
A NetSuite operations leader needed signatures tied to system records and document format rules.
- Xerox used signNow with NetSuite integration.
- The team matched signatures to the right documents.
The workflow reduced manual routing and kept approvals aligned with business data, which helped the team manage document formats and signatures more consistently across departments.
Real estate
A property founder needed online execution for lease and related documents with clear security and compliance.
- Martin Properties processed documents online.
- Mobile signing supported remote execution.
The result was faster turnaround on property paperwork, with a record of execution that supported remote work, mobile access, and compliance-focused document handling.
Best practices for signing
A disciplined setup helps reduce disputes, preserve evidence, and keep signed PDFs usable across legal and operational reviews.
Use certificate-backed signing
Right-size authentication
Preserve the audit trail
Define retention early
FAQ and troubleshooting
These answers focus on validation, plan limits, and compliance questions that often come up when teams sign PDFs in regulated workflows.
signNow Business includes legally binding eSignatures, templates, mobile apps, and audit trails. If you need HIPAA support, confirm a BAA is in place and keep retention aligned to 6 years under 45 CFR 164.530(j)(2).
A validation warning often points to an expired certificate, an untrusted chain, or a changed file. signNow records the signing history, and a tamper-evident PDF should still show whether the document changed after signing.
If the signer cannot complete the process, check authentication settings, email delivery, and whether the recipient can access the document on desktop or mobile. signNow supports mobile signing and audit trails for completed actions.
For business records, the Business plan covers core eSignature needs, while Business Premium adds bulk send and Enterprise adds advanced signer authentication. If you need SSO or full API access, Site License is the relevant tier.
Under ESIGN and UETA, enforceability depends on intent, attribution, and record integrity. A clear audit trail, signer authentication, and retained signed PDF help support admissibility and reduce dispute risk.
For FDA-regulated records, 21 CFR Part 11 requires secure audit trails, validation, and unique user identification. signNow can support controlled workflows, but the process must be validated for the specific predicate-rule use case.
Vendor comparison snapshot
The table compares core signing features and entry pricing across leading vendors using verified public data where available.
| signNow | DocuSign | Adobe Sign | PandaDoc |
|---|---|---|---|
| ESIGN and UETA support | Yes | Yes | Yes |
| Starting price | $8/user/mo | $15/user/mo | $14/user/mo |
| Free trial | 7-day trial | Not verified | Not verified |
| Audit trail | Yes | Yes | Yes |
| HIPAA support | BAA available | BAA available | Not verified |
Rollout and retention timeline
This timeline combines rollout milestones with retention and policy facts that matter for signed PDF records.
Day 0:
Day 1:
Week 1:
7-day trial:
HIPAA retention:
ESIGN recordkeeping:
Part 11 records:
UETA evidence:
Risks of improper signing
Weak attribution
Broken integrity
Missing records
No BAA
Part 11 gap
What happens in the audit trail
The audit trail records the technical evidence behind a signed PDF, from identity checks to exportable history.
Authenticate signer:
Record timestamp:
Create document hash:
Seal the record:
Link evidence:
Retrieve audit trail:
Pricing and plan comparison
Public pricing and feature availability vary by vendor and plan, so the table uses verified entry-tier data where available.
| signNow | DocuSign | Adobe Sign | PandaDoc | HelloSign | |
|---|---|---|---|---|---|
| Starting price | $8/user/mo | $15/user/mo | $14/user/mo | $19/user/mo | $15/user/mo |
| Free trial | 7 days | Not verified | Not verified | Not verified | Not verified |
| Bulk send | Yes, Business Premium | Not verified | Not verified | Yes, plan-based | Not verified |
| Audit trail | Included | Included | Included | Included | Included |
| HIPAA compliance | BAA available | BAA available | Not verified | Not verified | Not verified |
Key performance indicators that demonstrate SignNow's proven track record.