Electronic Signature: A Complete Guide for Beginners

In today’s rapidly developing digital era, where business transactions, communication, and official procedures have significantly moved into the online world, the need for

• authentic,
• secure
• and legally recognized signatures is essential.

Electronic signatures are becoming a key tool.

So, as we can see, electronic signatures are not only a practical, but also an economical and secure solution for today’s businesses and individuals. These advantages, together with ongoing digitalization and the general shift to cloud technologies, make electronic signatures an inseparable part of our everyday life.

What is an electronic signature?

An electronic signature is a technological tool whose main function is to guarantee the authenticity and integrity of a document.

When choosing the type of electronic signature, it is important to consider the level of security your transactions require. If you work with sensitive documents or documents with high legal requirements, it may be more appropriate to use an advanced or qualified electronic signature.

In recent years, electronic signatures have become a key part of the legal system in many countries, including Slovakia. The legal validity of electronic signatures is based on laws and regulations that determine when and how electronic signatures may be used.

In Slovakia and within the European Union, the use of online signatures is regulated by the eIDAS Regulation (Electronic Identification, Authentication and Trust Services). This regulation harmonizes legal rules related to online signatures across all EU member states and ensures that signatures are recognized cross-border.

It is important to note that not all electronic signatures are equal in the eyes of the law. Qualified electronic signatures provide the highest level of legal protection and are considered equivalent to a handwritten signature in all legal contexts.

As an individual or a business, it is crucial to understand these laws and how they affect your use of electronic signatures. Understanding the legal aspects will help you protect your interests and make sure that your electronic transactions comply with the law.

Legal validity of electronic signatures

In recent years, electronic signatures have become an inseparable part of digital communication and transactions. It is important to understand that the legal validity of electronic signatures is, in many aspects, comparable to the validity of traditional handwritten signatures.

Basically, this means that if a document is signed with a valid electronic signature, it is legally binding and recognized in the same way as if it had been signed by hand. An electronic signature therefore demonstrates the signatory’s approval or consent to the content of the document, on a legally binding basis.

It is important to mention that there are certain exceptions and specific cases where the legal validity of electronic signatures may be limited or where handwritten signatures may be required. These cases may include, for example

• some real estate contracts,
• some legal documents,
• or in other specific situations according to the law.

Types of electronic signatures

Electronic signatures can be divided into three main categories: simple, advanced, and qualified.

Each of these types has different levels of security and authentication:

• Simple electronic signatures: These signatures are the simplest type of electronic signatures. They can be as simple as, for example, typing a name in an email, they have no specific technical requirements, and their level of security is limited.
• Advanced electronic signatures: These signatures provide a higher level of security. They are uniquely linked to the signer, which enables verification of the signer’s identity. In addition, they detect any changes in the document after it is signed, which ensures the integrity of the document. Using an advanced electronic signature is sufficient for most signed documents.
• Qualified electronic signatures: These signatures provide the highest level of security and authentication, but obtaining and using them requires more time than advanced or simple electronic signatures. They must be created using a qualified electronic signature creation device and are issued by a trusted service that is approved by the relevant national authority. Qualified electronic signatures are the only electronic signatures that have the same legal validity as handwritten signatures certified by a notary. Using qualified signatures is not necessary for most use cases.

Cross-border recognition

In today’s globalized society, where business transactions and communication often take place across national borders, recognition of electronic signatures at the international level is significant.

Electronic signatures are recognized throughout the European Union. This means that a document signed in one EU member state is legally valid in the other member states as well. This facilitates cross-border business transactions and enables people and organizations to work more efficiently and flexibly.

However, it is important to note that although the electronic signature as such is recognized throughout the EU, specific legal requirements and procedures may differ depending on particular national legislation. In some cases, for example, it may be necessary to use a qualified electronic signature, which provides the highest level of security and is the only type of electronic signature that has the same legal validity as a handwritten signature.

Trustworthiness of services

Trusted services are a significant aspect of the electronic signature ecosystem. Their role is to provide safe and reliable electronic signature services that ensure authentication of parties and integrity of documents.

Trusted services must meet certain requirements for security and data protection. For example, they must use secure systems and processes for creating, managing, and storing electronic signatures and related data. They must also ensure the protection of users’ personal data and comply with all relevant legal regulations in the field of data protection.

Trusted services also play an important role in creating qualified electronic signatures, which provide the highest level of security and have the same legal validity as handwritten signatures. For a service to be considered a qualified trust service, it must be approved by the relevant national authority.

Why is an electronic signature important?

Electronic signatures have become an inseparable part of today’s digital world. Their importance is reflected not only in legislation, but also in everyday business practices.

How do these signatures facilitate digital transformation and contribute to efficiency?

• Speed: Electronic signatures significantly accelerate the signing process. You can sign documents anywhere and anytime, without the need to print, send by post, or scan. This saves you time and allows you to complete transactions faster.
• Costs: Electronic signatures save money by eliminating the need for printing, postal and courier services, storage, and management of paper documents.
• Security: Electronic signatures provide a higher level of security than traditional paper signatures. They are uniquely linked to the signer and guarantee the integrity of the document by making any changes after signing clearly visible.
• Global acceptance: As we have already mentioned, electronic signatures are recognized and legally valid throughout the European Union, which facilitates cross-border business transactions.

 

The difference between handwritten and electronic signatures

When comparing handwritten signatures with electronic ones, it is important to know the basic differences between them.

Although both types of signatures have legal validity, they have different characteristics and advantages:

• Signing documents: A handwritten signature requires the physical presence of the signer and their signature on a paper document. An electronic signature, on the other hand, can be created and attached to a digital document anywhere and anytime, which brings great flexibility and comfort.
• Transaction speed: Electronic signatures enable faster and more efficient transactions, because they eliminate the need for physical handling of documents and provide immediate delivery.
• Security: While handwritten signatures can be forged and it is difficult to verify their authenticity, electronic signatures provide strong security and verification mechanisms. Encryption and time stamps ensure that the signature is uniquely linked to the signer and that the document has not been changed after signing.
• Document storage and management: Handwritten signatures require physical storage and management of documents, which can be costly and time-consuming. Electronic signatures enable easy digital storage and handling, which simplifies searching and sharing documents.
• Accessibility: Electronic signatures allow people with certain physical limitations, such as loss of motor skills, to sign documents without physical strain or assistance, which is often impossible with handwritten signatures.
• Support for remote work: In today’s world, where remote work is becoming the norm, electronic signatures enable workers and customers to sign documents without the need for an in-person meeting.
• Legal traceability: Electronic signatures often include digital traces, such as IP addresses and time stamps, which provide an additional layer of legal traceability.
• Integration into company systems: Electronic signatures integrate easily into existing digital systems and processes, such as document management systems, workflow automation, and CRM platforms, which is not possible with handwritten signatures.
• Protection against forgery: Electronic signatures are often protected by advanced cryptographic protocols, which makes forgery much more difficult, while handwritten signatures can be forged relatively easily.

How does an electronic signature work?

The technology behind an electronic signature is based on sophisticated cryptographic processes that ensure authenticity, integrity, and non-repudiation of signed documents.

Key aspects of this technology include:

• Asymmetric cryptography: Electronic signatures use a technology called asymmetric cryptography. This technology uses a pair of keys—one private and one public. The private key is held by the signer and is used to create the signature, while the public key is available to everyone and can be used to verify the signature.
• Hash functions: When creating an electronic signature, the document is first converted into a form called a hash, using a mathematical function known as a hash function. The hash represents a unique “fingerprint” of the document, which is then encrypted with the signer’s private key.
• Signature verification: When verifying an electronic signature, the encrypted hash is first decrypted using the signer’s public key. Then a new hash is created from the original document and compared with the decrypted hash. If these two values match, the signature is considered valid, meaning the document has not been changed after signing.
• Time stamps and certificates: Many electronic signature solutions also use time stamps and digital certificates issued by trusted third parties to provide an additional layer of verification and legal validity of electronic signatures.
• Security: All these processes are designed to provide a high level of security. Private keys must be stored securely and must never be shared to prevent signature forgery.
• Integration into existing systems: Many electronic signature solutions are designed to integrate easily into existing systems and software, such as document management systems or CRM tools. This enables smooth use of electronic signatures without the need to change existing workflows.
• Mobile accessibility: Given that we live in the smartphone era, many electronic signature providers offer solutions that are accessible and fully functional on mobile devices. This enables signing documents anywhere and anytime.
• Multi-factor authentication: Some electronic signature systems use multi-factor authentication to provide an additional layer of security. This can include, for example, the use of SMS codes, biometric data, or other verification methods besides the signature itself.
• Biometric data: Some electronic signature solutions may collect biometric data, such as the speed and rhythm of writing a signature on a touch screen. This data can be used for additional verification of the authenticity of the signature.
• Consistency and standardization: Thanks to electronic signature technology, it is possible to maintain consistent and standardized signature formats across an organization, which would be very difficult with handwritten signatures.

How to use an electronic signature in practice?

Practical tips and recommendations on how to use electronic signatures effectively:

• Identifying documents to sign: The first step to effectively using electronic signatures is identifying the types of documents you sign regularly. This can include business contracts, invoices, internal workplace documents, or even private documents such as lease agreements, insurance policies, etc.
• Choosing an electronic signature provider: There are many electronic signature solutions on the market. When choosing, it is important to consider several factors such as security, price, ease of use, integration options, and customer support.
• Signing documents: When signing documents with an electronic signature, it is important to follow certain procedures for the signature to be valid and legally binding. This can include, for example, reading the entire document before signing, ensuring the signature is placed in the correct location, or verifying that all parties to the document have properly signed.
• Storing and managing documents: After signing documents, it is important to store them securely and manage them properly. Electronic signatures often come with document management tools that allow easy searching, archiving, and sharing of signed documents.

Electronic signature for different types of documents

Electronic signatures can be used for a wide range of documents, whether in work or personal life.

Most commonly, electronic signing is used for:

• Business contracts: Electronic signatures are ideal for business contracts, such as supplier contracts, contracts for the sale of goods and services, license agreements, etc. They facilitate the process of concluding a contract by eliminating the need for a physical meeting and enabling fast and secure signing of documents online.
• Employment contracts and other HR documents: Electronic signatures can also be very useful in human resources. Employment contracts, data protection agreements, leave requests, and other similar documents can be signed electronically quickly and efficiently.
• Legal documents: Some legal documents, such as wills, powers of attorney, and other legal contracts, can also be signed electronically. In some cases, it may be necessary to meet specific legal requirements, so it is important to consult such situations with a legal advisor.
• Private documents: Electronic signatures can also be useful in personal life. For example, lease agreements, insurance contracts, or even documents related to family matters can be signed electronically.
• School and academic documents: Electronic signatures are often used to sign academic documents, such as applications for study, confirmations of study, etc. This speeds up and simplifies administrative processes in educational institutions.
• Healthcare documents: Medical records, treatment consents, insurance claims, and other documents in healthcare can be signed electronically, which speeds up the process and increases patient security and privacy.
• Documents in real estate agencies: Purchase agreements, lease agreements, mortgages, and other documents associated with real estate transactions are often signed electronically, which simplifies and speeds up the process of selling or renting property.
• Documents for customer services: Documents related to customer services, such as contracts, complaint forms, warranty certificates, can also be signed electronically.
• Public administration-related documents: Various types of public administration documents, such as applications for state grants, registration forms, license applications, and other similar documents, can also be signed electronically.

How to get started with electronic signatures

Getting started with an electronic signature does not have to be complicated.

Here are a few steps that will help you get started:

• Choose an electronic signature provider: There are many electronic signature providers on the market. Each has its own advantages and disadvantages, so it is important to compare them and find the one that best suits your needs. When choosing a provider, you should consider price, features, security, and ease of use.
• Create an account: After choosing a provider, you will need to create an account. This process is usually simple and requires only basic information such as your name, email address, and password.
• Start using the electronic signature: You can start signing documents, sending them to other people to sign, tracking the signing status, and much more.
• Learn and adapt: As with any new tool or technology, with electronic signatures you will need to spend some time learning and adapting. But don’t worry—most providers have useful guides and customer support that will help you.