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DeltaHacks uses QR codes for event check-in and meal tracking. Each hacker receives a unique QR code accessible through their profile.

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Accessing Your QR Code

Your QR code is available once you’ve RSVP’d for the event:
1

Navigate to your profile

From the dashboard, click Check-In QR Code or go to /profile.
2

View your QR code

Your profile displays a large QR code containing your unique user ID.
3

Add to digital wallet (optional)

Save your QR code to Apple Wallet or Google Wallet for quick access.

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Profile Page Information

Your profile displays:
  • Name - From your DH12 application (first and last name)
  • Education Details:
    • Year of study
    • Degree program
    • Major
    • University/institution
  • QR Code - Large scannable code with your user ID
  • Wallet Integration - Buttons to add to Apple/Google Wallet
  • Social Links - Your provided social media links (if any)
The QR code encodes the URL: https://portal.deltahacks.com/profile/[your-user-id]

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Event Check-In

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For Hackers

When you arrive at DeltaHacks:
  1. Open your profile page on your phone
  2. Show your QR code to the check-in station
  3. Staff will scan your QR code
  4. Your status changes to CHECKED_IN
  5. You’re ready to start hacking!

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What Happens on Check-In

  • Your application status updates to CHECKED_IN
  • You gain access to checked-in dashboard features
  • WiFi information becomes visible
  • Your meal counter is initialized

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Meal Ticket System

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How Meal Tracking Works

The QR code is also used for meal redemption:
  • Meal Counter - Each user has a mealsTaken count (starts at 0)
  • Last Meal Timestamp - Tracks when you last redeemed a meal
  • Scanning Stations - Food stations have scanners to track meal redemption

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At Meal Times

  1. Queue at the meal station
  2. Show your QR code when you reach the front
  3. Staff scans your code
  4. Your meal count increments
  5. Timestamp is recorded
The system may enforce limits to ensure fair distribution of meals across all attendees.

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Apple Wallet Integration

You can add your DeltaHacks pass to Apple Wallet:

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Adding to Apple Wallet

  1. Go to your profile page
  2. Tap Add to Apple Wallet button
  3. The system generates a .pkpass file using passkit-generator
  4. Follow iOS prompts to add the pass to Wallet

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What’s on the Pass

  • Your name
  • DeltaHacks branding
  • QR code/barcode for scanning
  • Event dates
Apple Wallet passes work on iPhone and Apple Watch. You can access them even without internet connection.

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Google Wallet Integration

Similar to Apple Wallet, you can add to Google Wallet:

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Adding to Google Wallet

  1. Go to your profile page
  2. Tap Add to Google Wallet button
  3. Follow Android prompts to save the pass
  4. Access from Google Wallet app

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Scanning Stations

DeltaHacks uses several types of scanning stations:

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Station Types

Stations are configured with:
  • Station Name - e.g., “Main Entrance”, “Meal Station 1”
  • Option - Additional identifier for the station
Each scan creates an EventLog entry with:
  • User ID
  • Station ID
  • Timestamp

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Event Logging

When your QR code is scanned: 
EventLog {
  userId: "your-user-id"
  stationId: "station-id"
  timestamp: DateTime
}
This creates a unique record per user per station, tracking your participation throughout the event.

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Best Practices

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Keep Your QR Code Accessible

  • Bookmark your profile page
  • Add to home screen on mobile
  • Save to digital wallet for offline access
  • Take a screenshot as backup (though live page is preferred)

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At Scanning Stations

  • Have your QR code ready before reaching the front of the line
  • Increase screen brightness for easier scanning
  • Hold your phone steady while being scanned
  • Wait for confirmation before moving on
Do not share your QR code with others. Each QR code is unique to you and used for tracking your meals and event participation.

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Troubleshooting

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QR Code Won’t Scan

  • Increase screen brightness
  • Make sure the QR code is fully visible (not zoomed/cropped)
  • Clean your screen
  • Ask staff to manually look up your profile by name

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Can’t Access Profile

  • Make sure you’re logged in to the portal
  • Check your internet connection
  • Try refreshing the page
  • Use digital wallet pass if you saved it earlier

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Lost Access to Phone

  • Contact DeltaHacks staff at the check-in desk
  • They can look up your profile by email or name
  • Manual check-in is available as fallback

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Privacy Note

Your QR code URL is publicly accessible but only shows:
  • Name and education info from your application
  • Social links you chose to share
It does NOT show:
  • Your application responses
  • Contact information
  • Resume
  • Private profile details
Other hackers can scan your QR code to view your profile and connect with you. Only share your social links if you’re comfortable with them being public.

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