📌 JSON Web Tokens (JWT) Summary
JSON Web Tokens (JWT) are a compact and self-contained way to transmit information securely between parties as a JSON object. They are commonly used for authentication and authorisation in web applications, allowing servers to verify the identity of users and ensure they have permission to access certain resources. The information inside a JWT is digitally signed, so it cannot be tampered with without detection, and can be verified by the receiving party.
🙋🏻♂️ Explain JSON Web Tokens (JWT) Simply
Imagine a JWT as a digital version of a stamped ticket you get at a cinema. The ticket shows your seat and the film you are allowed to watch, and the stamp proves it is real. With JWT, your ticket contains information about you and what you can do, and the digital signature acts as the stamp that proves it has not been changed.
📅 How Can it be used?
JWT can be used to let users log in once and access different sections of a website without re-entering their password.
🗺️ Real World Examples
A mobile banking app uses JWTs to keep users logged in securely. When a user logs in, the server sends a JWT to the app, which then includes this token in each request it makes. The server checks the token to confirm the user’s identity and permissions before allowing access to account information or transactions.
An online learning platform uses JWTs to grant teachers and students access to different features. After signing in, users receive a token that specifies their role. When accessing course content or submitting assignments, the platform checks the JWT to decide whether the user can view materials or grade submissions.
✅ FAQ
What is a JSON Web Token and why is it useful?
A JSON Web Token, or JWT, is a small digital package that carries information between two parties, such as a user and a website. It is useful because it helps websites confirm who you are without needing to check a password every time you do something. This makes logging in and staying logged in much simpler and safer for both users and websites.
How does a JWT help keep my information secure?
A JWT is signed using a special key, which means that if anyone tries to change what is inside, it will be obvious to the website or service checking it. This helps prevent tampering and makes sure that only trusted information is accepted, keeping your details and permissions safe as you use different parts of an application.
Can anyone read the information inside a JWT?
The information inside a JWT is not hidden, but it is protected from being changed. While someone could see what is inside if they have the token, they cannot alter it without being detected. For this reason, sensitive data like passwords should not be included in a JWT, and it is best used for things like user IDs or access permissions.
📚 Categories
🔗 External Reference Links
Ready to Transform, and Optimise?
At EfficiencyAI, we don’t just understand technology — we understand how it impacts real business operations. Our consultants have delivered global transformation programmes, run strategic workshops, and helped organisations improve processes, automate workflows, and drive measurable results.
Whether you're exploring AI, automation, or data strategy, we bring the experience to guide you from challenge to solution.
Let’s talk about what’s next for your organisation.
💡Other Useful Knowledge Cards
Cross-Functional Planning Boards
Cross-Functional Planning Boards are visual tools or platforms used by teams from different departments to coordinate their work and share information. These boards help break down barriers between teams, making it easier for people with different skills and roles to plan, track progress, and solve problems together. They are often used in workplaces to improve communication, transparency, and efficiency when working on shared projects.
Innovation Strategy
Innovation strategy is a plan that guides how a business or organisation approaches creating new products, services, or ways of working. It sets clear goals for innovation and outlines the steps needed to achieve them. By following an innovation strategy, organisations can stay competitive, adapt to changes, and ensure they are meeting customer needs effectively.
Scrum for Non-IT Teams
Scrum for Non-IT Teams is an approach that adapts Scrum, a popular project management framework, for use in areas outside of software development. It helps teams organise their work into small, manageable pieces, encourages regular check-ins, and promotes teamwork and transparency. This method is used in fields like marketing, event planning, education, and product design to improve workflow and communication.
Robotic Process Automation Scaling
Robotic Process Automation scaling is the process of expanding the use of software robots to handle more tasks or larger volumes of work within an organisation. It involves moving beyond initial pilot projects to automate multiple processes across various departments. This requires careful planning, management of resources, and ensuring that the technology can support increased demand without losing effectiveness.
Product Owner Role in Business
The Product Owner is a key role within a business, particularly in teams that use Agile methods. This person is responsible for defining the features and requirements of a product, making sure the development team knows what to build and in what order. They act as a bridge between business goals and the technical team, ensuring the final product delivers value to customers and meets the companynulls objectives.