Token claim QR/link
Let a user claim a reward from a time-limited code or link.
A signed-in user opens a claim link and the server verifies it before issuing tokens once.
This lab at a glance
- Level
- Advanced
- Best first step
- Read the overview, then open the Build Map
- You’ll learn
- Single-use tokens, then how the rest of the feature fits together.
- Included
- Overview, Build Map
Category
Lab sectionsOverview
Feature blueprint
Let a user claim a reward from a time-limited code or link.
A signed-in user opens a claim link and the server verifies it before issuing tokens once.
Why this matters: Let a user claim a reward from a time-limited code or link.
In this lab, you’ll see how the smallest useful version connects the user action, app checks and saved outcome before the feature grows into a fuller product.
- 1User actionThe user begins the feature by giving the app useful input.
- 2App checksThe app validates the request before work continues.
- 3System processThe feature applies the core rule or workflow.
- 4Saved resultThe useful outcome is stored or made available.
- 5User outcomeThe user sees a clear result and can continue.
Context
Why this feature matters
Map the people, data, decisions, and states needed for token claim qr/link.
The important lesson is learning how a visible user action becomes a reliable app outcome without hiding the checks, states and review points that make the feature dependable.
Pattern examples
Where this pattern appears
- Event attendance reward
- Campaign token claim
What the learner does
The visible side of the feature stays focused on clear input, review and next steps for member, event organiser.
- Scans a QR code or opens a claim link.
- Confirms the reward in their account.
What the app does
Behind the interface, the app protects the workflow by checking, shaping and storing the outcome in a way the product can trust.
- Validates scope and expiry.
- Prevents reuse and records the ledger credit atomically.
Learning outcomes
What you’ll learn
Single-use tokens
Atomic redemption
Expiry and replay protection
Beginner build vs real product version
Beginner build
Redeem one single-use claim code into a wallet.
Real product version
Adds signed claims, campaigns, quotas, expiry, fraud monitoring, offline constraints, and reconciliation.
How it can grow
Once the beginner version works, the upgrade path is about making the workflow more resilient, reviewable and useful in a real team.
- Add stronger validation, permissions, monitoring, and operational review.
Watch out for
- Building every edge case before the smallest useful workflow works.
Ready to explore the feature?
Try the safe demo first, then open the Build Map to plan the users, data, rules and states.
Pattern context
Why this pattern matters
Map the people, data, decisions, and states needed for token claim qr/link.
This is best studied after the basics because the real version needs careful permissions, review states and abuse prevention.
Where this appears
- Token wallet and ledger: Server-authoritative wallet ledger
- Supporter impact voting: Eligibility-bound community vote
Real-world variations
How this pattern appears in real apps
These examples show how the same feature shape can appear in different products. The aim is to understand the pattern, not copy a production system directly.
Token wallet and ledger
Server-authoritative wallet ledger
Supporter impact voting
Eligibility-bound community vote
What to build before this
Useful foundations
Start with the smallest version described in the Build Map before adding extra states or integrations.
What this can grow into
Sensible next steps
- Add stronger validation, permissions, monitoring, and operational review.
Use this pattern with...
Features rarely exist alone
Start with a ledger or eligibility rule, then connect claims, redemption, checkout or review states.
Related Features
Explore nearby patterns in the library
These related examples stay public and help show how one feature often connects to the next in a real product.
Keep exploring
Browse more public feature patterns
Head back to the Feature Library to compare categories, difficulty levels, and related workflows.
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