Can You Use Certified Digital Signatures in Adobe Acrobat Mobile App?
Question details
Users are trying to apply certified digital signatures to PDF documents using the Adobe Acrobat mobile app but cannot locate the feature.
- Product
- Adobe Acrobat Mobile App
- Device & OS
- not provided
- Scenario
- Professionals, such as physicians, need to apply formal, certificate-based digital signatures to PDF documents while working on mobile devices.
- Observed behavior
- The Acrobat mobile app only offers basic signature drawing tools and completely lacks the certificate-based digital signature tools found in the desktop version.
Ensure you have access to a desktop computer (Windows or macOS) equipped with your digital ID or smart card, as mobile applications generally have limitations with local cryptographic certificates.
Use Adobe Acrobat on a Desktop Computer
Since the mobile app lacks digital certificate support, you must use the desktop version of Adobe Acrobat or Acrobat Reader to apply certified digital signatures.
The Acrobat Reader mobile application is designed as a lightweight tool primarily for viewing, commenting, and basic annotating. It does not support the complex cryptographic workflows required for certificate-based digital signatures.
Move the PDF file from your mobile device to your Windows or macOS computer using email, a cloud storage service, or a direct cable connection.
Launch Adobe Acrobat or Adobe Acrobat Reader on your computer and open the transferred PDF document.
Navigate to the 'Tools' menu at the top of the screen and select the 'Certificates' option to reveal the digital signature toolbar.
Click 'Digitally Sign' on the top toolbar, use your mouse to click and drag a signature box on the document, and choose your digital ID to securely certify the file.
Use an Enterprise Cloud-Signing Workflow
If signing on a mobile device is strictly required, you must utilize a supported enterprise cloud-signing platform rather than a standard local reader app.
Securely Edit and Sign PDFs with WPS Office
If you need a reliable desktop solution to handle PDF forms and digital signatures without the high subscription costs, WPS Office provides a comprehensive, lightweight PDF editor for your Windows or Mac computer.
- 1. Download and Install WPS Office: Get the free WPS Office suite for your Windows or Mac computer and complete the standard installation process.
- 2. Open your PDF: Launch WPS PDF and open the document you need to review or sign.
- 3. Sign the Document: Navigate to the 'Protect' or 'Fill & Sign' tab on the top ribbon to easily apply your secure signatures and manage document permissions.
Frequently Asked Questions
Why doesn't the Adobe Acrobat mobile app support digital certificates?
Mobile operating systems like iOS and Android handle local certificates and secure hardware tokens differently than desktop systems. To maintain security sandboxing, standard free reader apps do not implement the complex cryptographic access required for local certificate-based signatures.
Can I view a digitally signed PDF on the Acrobat mobile app?
Yes, you can open and view PDF documents that have been digitally signed on a desktop. The mobile app will display the visual appearance of the signature, though it may not be able to fully validate the entire certificate chain locally.
What is the difference between an electronic signature and a certified digital signature?
An electronic signature (which the mobile app supports) is simply a visual representation or drawing of your handwritten signature. A certified digital signature uses a cryptographic digital ID issued by a trusted certificate authority to legally verify the signer's identity and ensure the document has not been altered.
Are there any mobile apps that support true digital signatures?
Standard free PDF viewers generally do not support local digital certificates. However, enterprise applications and cloud-signing workflows (such as Adobe Acrobat Sign or DocuSign) allow users to apply compliant, certificate-based digital signatures on mobile devices via cloud-hosted digital IDs.
