Use your smart phone as a penalty card.
When you are a judge for a football match, you can give a card to the player using this app.
The records about giving cards are saved in your phone. You may re-check the recorded history.
Use this application in the following order:
1. Add the match at Match Setting menu.
2. If the foul occurs, select the card colors and raise the phone high.
3. Touch the icon at the right-top, record that you gave which card to whom.