FastPay ⚡

Tap-to-pay crypto payments in under 10 seconds.

Problem

Current crypto point-of-sale systems are broken:

• Customer scans QR code
• Manually enters payment amount
• Calculates gas fees
• Merchant typically reconciles offline

Result: Nobody uses crypto for coffee.

Hypothesis

Invert the flow. Make crypto payments work like Google/Apple Pay:

1. Merchant creates payment request (amount, merchant address, signed)
2. Customer taps phone on NFC terminal
3. Wallet pre-fills transaction (no manual entry)
4. Customer approves with one tap
5. Confirmed on-chain in <10 seconds

Result: Feels like Google/Apple Pay. Costs like crypto.

Tech Stack

• NFC Hardware: PN532 module for tap-to-pay
• Blockchain: Base L2 (fast, cheap settlement)
• Token: USDC (stable, no volatility)
• Protocol: Coinbase Commerce Payments (escrow + refunds)
• Signing: EIP-712 (cryptographic payment requests)

Status

🚧 In Development (Week 1 of 12)

Currently building Phase 1 proof-of-concept:

• Hardware component (Raspberry Pi + NFC module)
• NFC communication working
• First payment completed on Base testnet
• Merchant pilot (3 locations)

Follow the build: @pxaxm.base.eth or @pcdkd

Why This Matters

For Merchants:

• 0.01% fees (vs 3% for credit cards)
• Instant settlement (vs 2-7 days)
• No chargebacks
• Global payments (no forex fees)

For Customers:

• Fast end-to-end process (10 seconds vs 60+ seconds)
• Familiar UX (tap like a credit card)
• Self-custodial (no middleman)
• Works with existing wallets (MetaMask, Coinbase Wallet)

Roadmap

• Phase 1 (Weeks 1-4): Desktop terminal POC
• Phase 2 (Weeks 5-8): Merchant pilots + POS integration
• Phase 3 (Months 3-6): Phone dongle ($25 plug-in device)
• Phase 4 (Months 6-12): Custom hardware at scale

Get Involved

This is an open-source project. Contributions welcome.

• Merchants: Want to pilot? DM me
• Developers: Star the repo, issues coming soon
• Investors: Not happening

License

License

MIT. Fork it, improve it, deploy it.

If you're building something similar, I'd love to collaborate.

Commercial partnerships available for:

• White-label terminal deployments
• POS system integrations
• Custom hardware manufacturing

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Making crypto payments work IRL. Built on Base.