# Classifications of Electronic Signature

1. **Simple e-signatures:** provide little or no authentication at minimal or no cost.
2. **Advanced e-signatures:** are linked to specific signers but can still be vulnerable to fraud.
3. **Qualified e-signatures:** include third-party authentication and offer strong security making them legally binding.

<p class="callout info">Digital signature (Qualified e-signatures): an electronic signature consisting of a transformation of an electronic record using an asymmetric cryptosystem.  
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