In this web content, the author discusses their attempt to digitize their library card by putting the barcode on their iPhone’s Wallet app. They explain the process of creating a digital library card pass using Apple’s Passbook feature and highlight the challenges they faced along the way. The author mentions that most library cards use a barcode format called Codabar and discusses the need to generate a scannable barcode image for the pass. They also touch on the issue of cryptographically signing the pass and express their frustrations with the limitations and cost associated with obtaining a pass signing key from Apple. Overall, the author provides a detailed account of their experience and expresses their hope that Apple will improve the functionality of Wallet to better support library cards.
https://iliana.fyi/blog/ios-wallet-library-card/