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Digital signature

A digital signature is a secure electronic authentication in Australia that verifies a signer’s identity and confirms that an electronic document has not been altered. 

Digital signatures utilise public key infrastructure (PKI) and encryption technology to verify identity. They are recognised legally in Australia under the Electronic Transactions Act 1999, provided the identity and consent conditions are met. 

How it works 

  • Identity verification is performed using a digital certificate. 
  • A secure, encrypted code is attached to the document 
  • Any changes made after signing invalidate the signature 
  • Verification proves the authenticity of the signer and the integrity of the document 

Key benefits 

  • Higher security compared to standard electronic signatures. 
  • Faster document processing and turnaround times 
  • Reduced fraud risk. 
  • Legally recognized for most transactions in Australia. 

Common use cases in 2026 

  • Statutory declarations and official government forms 
  • Employment agreements and HR-related documentation 
  • Education enrolment and assessment documents 

Digital signatures are important for Australians as they enable legally valid transactions from a distance and streamline administrative processes. They also enhance the security of digital services in government, healthcare, and employment sectors. 

Medical Disclaimer: The content on this page is for informational purposes only. 

Dr Ammar Al-Ani

Medically reviewed by Dr Ammar Al-Ani

MBChB, CCBST, AMC, General Practitioner, 28+ Years of Experience

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