Everyone

Dmitry Holodov

KitKat

App that helps developers understand KitKat's new Host Card Emulation feature for payments.  App allows you to enter your own magnetic stripe data from a Visa card and use in an NFC payment protocol called Visa MSD.  While Visa did not intend for card holders to use their data this way, the app will work with Visa cards from most banks.  Visa MSD is a supported payment protocol by most NFC payment terminals in the United States and Canada.

To obtain the magnetic stripe data from your card, you will need a reader.  In the US, they are available on both Amazon and Ebay for around $20 delivered.  The inexpensive ones are USB devices that act as keyboard input, so no special drivers are needed on Windows or Mac OS X computers.  While I'm sure there's more secure options, you can use an app like Google Keep to quickly transfer the swipe input to your phone and paste it into the app.  The card data entered into the app is stored using Android's SharedPreference API in a way that is not accessible by other apps on a non-rooted phone.

The full source code to SwipeYours is available on Github:https://github.com/dimalinux/SwipeYoursBlog describing many details of SwipeYours:http://blog.simplytapp.com/2014/01/host-card-emulation-series-swipeyours.htmlSwipeYours requires both NFC and Android 4.4 (KitKat) or newer for HCE (Host Card Emulation).

Privacy: This app has no Internet permissions and will not transfer your card information anywhere other than over the NFC interface for payments.

SwipeYours

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