Use the Nordic ID Keyboard - the iOS keyboard with special barcode and RFID abilities - in combination with your Nordic ID reader. It will enable you to receive data from Nordic ID reader and automatically write it to any text input of your choice.
As a prerequisite Nordic ID Keyboard needs to be installed, running and connected to a Nordic ID reader. Make sure a text input is selected (for example a text editor) and keyboard is visible, it will ensure that data can be received.
Nordic ID Keyboard includes shortcut buttons for quick barcode and RFID reading.