• Low security - susceptible to fraud and alterations.
• Very simple and intuitive use
1. Be uniquely associated with the signer.
2. Allow identification of the signer.
3. Be created using data for the creation of an electronic signature that the signatory can, with a high level of confidence, use under his exclusive control.
4. Is linked to the data signed by it in such a way that any subsequent change of the data is detectable.