Add the widget
Press and hold an empty spot on your home screen. On iPhone, tap the plus in the corner, search for ShowCards and pick a widget; on Android, open the Widgets tray, find ShowCards and drag one out.
There are two to choose from: Card shows a single card, and Cards shows a small grid of up to four.
Choose which cards it shows
After placing the widget, choose the cards it displays. On iPhone, press and hold the widget and tap Edit Widget; on Android, a short setup screen appears as you drop it in place.
Leave a single Card widget on Automatic and it follows your wallet on its own, showing your favourite, or the card you use most, with nothing to keep up to date.
Sizes and the Show number option
The widget adapts to its size. Small, it shows a tappable brand button that opens the card; larger, it shows the full barcode. Turn on Show number and the human-readable number is printed under the barcode, handy for tills that key it in by hand.
Tap to open
Tapping a widget opens that card full-screen at full brightness, ready for the scanner, so you never have to hunt through the wallet first.