The Wallet app, with Apple Pay and cards configured
|Initial release||September 19, 2012iOS 6)(|
iOS 9.1 / October 21, 2015
|Operating system||iOS 6 and later|
Apple Wallet (referred to as simply Wallet) is an application in Apple's iOS (previously known as Passbook in iOS 6 to iOS 8) that allows users to store coupons, boarding passes, event tickets, store cards and, starting with iOS 8.1, credit cards, loyalty cards, and debit cards via Apple Pay. The technology is designed by Apple Inc. and was presented at the 2012 Apple Worldwide Developers Conference (WWDC) on June 11, 2012 under the name Passbook (now Wallet, as of iOS 9). The application was released as a built-in app for iPhones and iPod Touch devices alongside iOS 6 on September 19, 2012.
The Wallet application displays Aztec, PDF417 and QR 2D barcodes and Code 128 1D barcodes beginning with iOS 9. Each digital coupon or ticket is known as a "pass". When the user launches Wallet for the first time, a brief introduction screen will appear with a button inviting users to browse applications on the App Store with Wallet integration. Passes can also be distributed online via Safari, sent to the user via email, or scanned using the built-in scanner in the Wallet app.
Passes are synced between iOS devices using iCloud, and OS X 10.8.2 and higher also support opening passes to be sent to users' iOS devices. Although the application is available in iOS 6 or later, it is currently only available on iPhone and iPod Touch, but not on iPad.
Wallet has the following features:
As Wallet is only officially provided by Apple for iOS, several third party developers have created unsupported applications for other operating systems, such as Pass2U Wallet or PassWallet for Android & BlackBerry, that support importing and viewing Wallet passes. Windows 8.1 Phone also supports Apple's pass format as well, although dynamic updates are not supported. Some issuers of passes also support viewing the passes through any web browser.
Passes exist in a larger ecosystem, because passes are created as a package. The package is a pass template, that is created with a pass signer, along with relevant data and a private key. Passes can be updated at any time using the PassKit API and an iOS app can interact directly with passes stored in Wallet.
In its simplest form, an interaction (or transaction) between a Pass and a system is facilitated by a 2D Barcode or the modern QR code although it requires the customer to initiate the activity.
In late 2014 the first known implementations utilizing the iBeacon wireless geofencing started to appear in retail locations in the US. The iBeacon solutions allowed the retailer to broadcast an unsolicited lock-screen notice onto smartphones within Wi-Fi range, which is about one thousand feet.
Passes can be distributed via email, SMS, MMS, the web, social media, an app, and as QR codes 
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