The in-app photo feature makes it easy to create and share photos with what3words addresses on. Simply tap the Photo button in the action panel at the bottom of your screen and then take a photo. The app uses your device's GPS to add your current what3words address as a sticker. If you need to select a different square, tap the pin icon. Use the icons on the side to change the sticker colour and style. When you're finished, you can download the photo to your device, or share it directly in your favourite apps.
To add a what3words address to an existing photo, tap the menu icon in the top corner of your screen and select Import a Photo. The app will use the photo’s geolocation data to display the what3words address where it was taken, as long as you had location services turned on when you took it. You can find more detailed instructions here.