lesson 5.3 - the project proposal: constraints & accessibility

Don't let tight deadlines and tight budgets ruin your UI! Master project constraints and accessibility requirements for your BTEC DIT proposals.

Welcome back to the project planning phase! We have already figured out what we are building and who we are building it for. But in the real world, we cannot just build whatever we want, taking as long as we like, with an unlimited pot of money. Today, we are going to look at the rules of the game: the project constraints. We will explore how time limits, budgets, and security needs shape our projects, while also making absolutely sure we design interfaces that everyone can use, regardless of their accessibility needs. Let's set our project boundaries!

Learning Outcomes

The Building Blocks (Factual Knowledge)

Recall the definitions of core project constraints, including time, resources, task dependencies, and security.

Describe specific user accessibility requirements that must be considered to ensure inclusive design.

The Connections and Theories (Conceptual Knowledge)

Analyse how a specific project constraint, such as a strict deadline or limited budget, directly impacts the design and development of a user interface.

Evaluate the potential negative consequences for a business if they fail to address accessibility requirements and security constraints in a project proposal.

The Skills and Methods (Procedural Knowledge)

Apply active reading strategies to extract time, resource, and security boundaries from a provided client brief.

Create a comprehensive project proposal section that formally outlines and justifies the accessibility and constraint parameters for a digital project.

Digital Skill Focus: You will develop your digital project management skills by defining clear project constraints and accessibility requirements based on user-centred design principles.

Setting the Boundaries: Project Constraints

In the real world, you cannot just build whatever you want, taking as long as you like, with an unlimited pot of money. Every digital project is bound by project constraints. These are the hard limits and rules you must work within. To succeed in your coursework, you must be able to identify these four key constraints:

Time: When is the final deadline? Are there smaller deadlines for prototypes along the way?

Resources: What is your budget? What hardware, software, and staff do you have available to build the project?

Task dependencies: Which tasks must be completed before another can start? For example, you cannot test a user interface until you have actually built it!

Security: How will you keep user data safe? Will you need passwords, encryption, or different levels of user access?

Designing for Everyone: Accessibility Requirements

A fantastic, beautiful interface is completely useless if your target audience cannot actually use it. True user-centred design means thinking about accessibility requirements right from the start, ensuring nobody is excluded.

Visual needs: Can the interface be used with a screen reader? Is the colour contrast high enough for users with colour blindness? Can the text be resized?

Auditory needs: Are there subtitles or transcripts for all video and audio content?

Motor needs: Are the clickable buttons large enough for someone with a hand tremor? Can the system be navigated using only a keyboard or voice commands?

Cognitive needs: Is the layout simple and predictable? Is the language clear and free of unnecessary jargon?

Active Learning: Add this information to your mindmap.

Task The Constraint Challenge!

Welcome to your first gig as a Junior Project Manager! Your client has just handed you a brief, but it is full of limitations. Can you design a solution that keeps everyone happy?

Get organised

Open up a blank word-processed document and put your name and class at the top.

Analyse the Brief

Read the following client request carefully:

"We need a new ticketing app for our local theatre. It must be finished in exactly 4 weeks, and we only have £200 to spend on stock images. Our audience includes many elderly patrons who have poor eyesight and shaky hands. Finally, users will need to enter their credit card details safely."

Now copy and paste it into your word processed document.

Identify the Constraints

Using the built in highlighter tools in the program, use a different colour to highlight the following in the brief:

Time constraint,

Resources constraint,

Security constraint.

Make sure to add a key to your document so that you know what each colour represents.

Identify the Accessibility Needs

What specific visual and motor accessibility requirements must this app meet? If you need inspiration, you can explore the official accessibility guidelines.

Write a short paragraph in your document explaining what you have discovered.

Propose a Compromise

Lastly, write a short paragraph explaining how you will design the app to be accessible for the elderly patrons WITHOUT missing the 4-week deadline or spending more than £200.

Struggling to understand how tasks link together in a project timeline? Ask our AI expert for a quick analogy!

Act as an expert UX designer. Explain what a task dependency is in project management. Limit the response to 50 words. Write for a 15-year-old student. Use an encouraging and simple tone. You must use an analogy about baking a cake. NO intro, NO outro, NO deviation from the topic, NO follow-up questions.

Share and submit

You may be asked to share your compromise with the class and submit your work for assessment.

Outcome: A written analysis of the brief outlining the project constraints, accessibility requirements, and a realistic design compromise.

Today you have learnt how to identify and balance critical project constraints like time, resources, and security, while ensuring your digital designs meet the accessibility requirements of all users.

Application to the Component Sample PSA

Component 1: Majestic Cinema

When designing the user interface for the Majestic Cinema app or kiosk, you cannot just assume every customer is an able-bodied teenager. You must consider accessibility requirements for elderly patrons who might need high-contrast text or larger buttons to book tickets easily. Furthermore, your design project will be constrained by time (the strict coursework deadline) and security (how you plan to keep user payment details safe in your proposed system).

Component 2: Pedal Power Cycles

For the Pedal Power Cycles dashboard, task dependencies are a major constraint you will face. You cannot build the dashboard charts until you have successfully imported and cleaned the raw sales data! Your resources are also constrained to the specific spreadsheet software provided by your school, and you must ensure the dashboard is accessible and clearly readable for the store manager, avoiding confusing colour combinations that might be difficult for users with colour blindness.

Out of Lesson Learning

⭐ The Cinema Security Check

Thinking about the Majestic Cinema app, write down three specific features you would include in your design to ensure the security constraint is met when a user is creating an account and paying for a ticket.

⭐⭐ The Pedal Power Timeline

Imagine you are building the Pedal Power Cycles dashboard. Write a numbered list of five tasks you must complete to finish the project. Next to each task, identify any task dependencies. For example, you might write: "Task 3: Create a pie chart. Dependency: Must complete Task 2 (clean the data) first."

⭐⭐⭐ The Universal Design Pitch

Write a short, persuasive email to the manager of Majestic Cinema explaining why spending a portion of their limited resource budget on making the new app fully accessible for users with visual impairments will actually be a good business decision in the long run.

Last modified: April 23rd, 2026