Gating entrances with Stripe and NFC passes

Joshua Nussbaum

Learn how to gate physical entrances using Stripe subscriptions and NFC passes. This guide shows how to issue Apple/Google Wallet passes with PassNinja, integrate Stripe Checkout, and control door access with a Raspberry Pi and NFC reader.

Stripe

•

Joshua Nussbaum

•7 min read•intermediate•

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•View Original

Node.js

Overview

The article discusses the integration of Stripe payments with NFC passes for digital access control, highlighting the advantages of using digital wallets over traditional physical keys. It outlines the architecture, hardware requirements, and implementation steps for building a gym membership system that utilizes these technologies.

What You'll Learn

1

How to integrate Stripe for subscription payments and digital pass issuance

2

Why using NFC passes simplifies access control for businesses

3

How to set up a Raspberry Pi for door access control using NFC

Prerequisites & Requirements

Basic understanding of payment processing and NFC technology
Familiarity with Stripe API and PassNinja(optional)
Experience with Node.js and Linux systems

Key Questions Answered

How can digital passes replace physical keys for access control?

Digital passes can be issued and revoked electronically using NFC technology, eliminating the need for physical keys or cards. This streamlines the access process for users and reduces operational costs for businesses by removing the need for front desk staff to manage physical access devices.

What hardware is required to implement NFC access control with Stripe?

To implement NFC access control, you'll need a Raspberry Pi Zero 2W, an NFC reader like the VTAP100, a door strike or bolt, and a relay module to control the door locking mechanism. These components work together to facilitate digital access using NFC passes issued through Stripe.

What are the steps to set up PassNinja for issuing digital passes?

To set up PassNinja, create an account on their website, log in to the dashboard, and create a new pass template for Google and Apple Wallet. Follow the provided instructions to configure the NFC reader for compatibility with your setup.

How does the purchase flow for a gym membership work in this system?

The purchase flow involves a public website where users can subscribe to a gym membership via Stripe Checkout. After payment, the system issues a digital pass that can be added to the user's wallet, allowing access through an NFC reader at the gym entrance.

Technologies & Tools

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Backend

Stripe

Used for processing subscription payments and managing user memberships.

Backend

Passninja

Facilitates the issuance of digital passes for Apple and Google Wallet.

Hardware

Raspberry Pi Zero 2w

Acts as the control unit for the NFC reader and door access system.

Hardware

Vtap100

NFC reader compatible with Apple and Google Wallet for scanning digital passes.

Backend

Node.js

Used for server-side logic and handling NFC reader interactions.

Key Actionable Insights

1
Implementing digital passes for access control can significantly reduce operational overhead by eliminating the need for physical keys.
Businesses can streamline their access management processes, reduce costs associated with issuing physical keys, and enhance user experience by providing a more convenient digital solution.

2
Utilizing PassNinja simplifies the integration of digital wallets into your application.
By abstracting the complexities of Apple and Google Wallet APIs, PassNinja allows developers to focus on building features rather than managing multiple integrations.

3
Using a Raspberry Pi for door access control is a cost-effective solution.
The Raspberry Pi Zero 2W is an affordable option that can easily interface with NFC readers and control door mechanisms, making it accessible for small businesses or startups.

Common Pitfalls

1

Failing to properly configure the NFC reader can lead to access issues.

Ensure that the NFC reader is correctly set up and tested with the digital passes to avoid user frustration and access denials.

2

Not validating the subscription status before granting access.

Always check the subscription status against the Stripe API to ensure that only active members can gain access, preventing unauthorized entry.

Related Concepts

Digital Wallets

Nfc Technology

Access Control Systems

Subscription Management