Tools, Techniques, and Practices

A Tool, Technique, or Practice (TTP) is the handbook’s smallest unit of design knowledge: one recurring product situation, the emotional mechanism at stake, and the pattern that tends to resolve it well. TTPs are modular by design—each one below is written to be understood, applied, and audited on its own, without first reading a strategy—but they are not a menu of unrelated tricks. Most of them share a small set of underlying mechanisms (documented in Concepts): what it costs someone to act, what makes a moment memorable, what earns trust, what turns action into ritual. Learning the TTPs is really learning to recognise those mechanisms in the wild.

The thirty-seven cards below are grouped into twelve strategies by the product goal they most often serve, but almost every TTP is useful outside its “home” strategy—Loading Feedback matters in Onboarding as much as it does in Trust Building. Browse this index when you know the pattern you need; browse a strategy page when you know the goal but not yet which pattern fits it.

• Calibrated Confidence: When the product uses AI, show how sure it is—so people know when to trust the output and when to check it.
• Commitment: Let users declare their intent, then design the product around it.
• Contact Bridge: Connect users to people they already know—without turning their address book into a growth hack.
• Deep-link: Drop users into the exact moment, feature, or context that matters.
• Discovery: Guide users to value before they know where to look.
• Effort Moat: Honour what people have built, so their progress remains useful and recognisable.
• Empty States: Turn “nothing here” into a clear, useful next step.
• Fail Safe: Protect people from costly mistakes while keeping ordinary work moving.
• Gamified Progress: Make meaningful progress visible, achievable, and fully in the user’s control.
• Graceful Exit: Make leaving—cancelling, pausing, exporting, deleting—as respectful as joining, so the last impression earns the return visit.
• Graceful Recovery: When the product fails, own it, explain it, and repair the user’s progress—so trust survives the bad day.
• Intent Mirroring: Notice a meaningful signal, then offer a small, optional next step that fits the user’s likely goal.
• Intentional Friction: Add a small, purposeful pause when moving quickly could create harm, regret, or an avoidable mistake.
• Investment: Help users build something that becomes more useful because they shaped it.
• JTBD Copywriting: Jobs-to-be-Done (JTBD) copy: write from the progress the user is trying to make, not the feature your product wants to describe.
• Limited Offer: Present a genuine, time-bound offer when it creates a fair choice, not pressure.
• Loading Feedback: Make unavoidable waits legible, calm, and proportionate.
• Micro Interactions: Small responses that make an action feel acknowledged, understandable, and complete.
• Momentum Bias: Give people a genuine head start without taking the decision away from them.
• Pattern Alignment: Use familiar mental models where they help people act with confidence.
• Perceived Effort Delay: When work takes time, show the real work; when it does not, respect the user’s time.
• Permission Serve: Ask for access only when people can understand, choose, and benefit from it.
• Personalisation: Make the product fit the user’s stated needs—without making assumptions they cannot inspect or change.
• Product Voice: One recognisable voice, with a tone that adapts to the user’s moment—celebratory at wins, plain and calm at failures.
• Progressive Disclosure: Reveal the next useful layer of complexity when the user needs it, while keeping deeper capability easy to find.
• Referral: Help satisfied users invite people who will genuinely benefit, with a clear and respectful path for everyone.
• Sandbox Experience: Let people experience a truthful slice of product value before asking them to commit.
• Setup Defaults: Give users a credible starting point they can understand, change, or skip.
• Shareability: Help users share a meaningful outcome when they want to tell its story.
• Small Quirk: A small, repeatable flourish that makes a clear product interaction feel recognisably yours.
• Spark Curiosity: Offer a truthful glimpse of a useful outcome, then let users choose whether to explore it.
• Success Moments: Mark meaningful progress with feedback that feels earned, then let users decide what comes next.
• System Widget: Put one timely, glanceable piece of user-chosen value where people already look.
• The Paywall: Present a clear, fair upgrade decision when users understand the value on offer.
• Time to Value: Help people reach their first meaningful outcome with the least unnecessary effort.
• Value Replay: Bring a user’s meaningful progress back into view, only where and when they have chosen to receive it.
• Variable Reward: Add optional novelty around reliable value, without making users chase uncertainty.