A frequent query among Apple Wallet enthusiasts is whether AirCard can customize the artwork of titanium Apple Cards, American Express (Amex) charge cards, or bank credit cards. Because Apple Wallet houses both everyday retail passes and high-security payment instruments, understanding how Apple treats these cards under the hood is critical.

PassKit Passes vs Apple Pay Payment Cards

Apple Wallet handles digital cards under two fundamentally distinct software frameworks:

  • Generic PassKit (.pkpass) Passes: Used for airline boarding passes, event tickets, gym memberships, retail loyalty cards, and transit passes. These pass files exist as readable bundles inside the iOS user partition. AirCard can modify their graphical assets with complete stability and persistence.
  • Secure Element Payment Cards: Used for Apple Card, American Express, Visa, Mastercard, and debit cards added via your bank or card issuer. These cards are tied directly to device account numbers (DANs) inside the Secure Element and are managed by passd and the Apple Pay daemon.

What Happens When You Customize Apple Card or Amex with AirCard?

As investigated in GitHub Issue #148 and community testing, AirCard can technically locate the cached artwork file for certain payment cards on the iPhone file system and overwrite the image with custom artwork. However, users should be aware of several important platform behaviors:

  • Automatic Asset Refresh by Card Issuers: Card issuers (such as American Express, Chase, or Goldman Sachs for Apple Card) periodically push cryptographic pass updates over the air. Whenever your card issuer sends a push notification, statement update, or token refresh, Apple Wallet re-downloads the official issuer artwork from Apple Pay servers, reverting your custom skin to the default appearance.
  • Dynamic Apple Card Color Changes: The official Apple Card in Apple Wallet dynamically transitions color based on spending categories (e.g. orange for food, yellow for shopping, green for travel). Overwriting the base card artwork may disable or clash with this native spending category visualization.
  • Apple Watch Discrepancy: Custom payment card skins flashed to the iPhone do not replicate to an Apple Watch, because the Apple Watch generates its own secure payment tokens and independently downloads bank-approved artwork.

For the most enduring, seamless, and glitch-free experience, we recommend using AirCard with:

  1. Transit and Subway Passes (e.g., Suica, Pasmo, Clipper, Octopus, MTA OMNY passes).
  2. Retail Loyalty and Rewards Cards (e.g., Starbucks, Target, Sephora, airline miles cards).
  3. Gym and Club Membership Passes.
  4. Custom Digital Business Cards and Contact Passes.

Summary Recommendation

While you can experiment with modifying American Express or Apple Card artwork using AirCard on macOS, understand that Apple Pay security infrastructure is designed to maintain issuer brand fidelity. If your payment card reverts to its default look after a transaction or OS reboot, this is normal Apple Wallet behavior and not a defect in AirCard.