The NFC mobile payment app allows users to conveniently make payments in shops with contactless card readers using their mobile phones. Users can add their cards to the app by either using a mini magnetic stripe reader in their phone or by pasting the track data into the app. The app allows users to store up to 20 cards on their phone and choose which card to use for each transaction. Importantly, the app does not require internet access and does not share information with other apps.

To use the app, users need to obtain the track2 magnetic stripe data from their cards using a USB reader. Alternatively, they can also use an audio jack card reader that can be purchased from online platforms such as Ebay or Amazon for a price range of $5 to $15. The app is compatible with Android 4.4 or higher and requires NFC functionality. It is important to note that the device must be unlocked when using the mobile payment feature.

In summary, the NFC mobile payment app offers a convenient way for users to make payments in shops with contactless card readers using their mobile phones. The app allows users to add and store up to 20 cards on their phone, and choose which card to use for each transaction. It does not require internet access and does not share information with other apps. Users can obtain the necessary card data using a USB reader or an audio jack card reader, which can be purchased online. The app is compatible with Android 4.4 or higher and requires NFC functionality.