A photo can be taken for 500 Bells at a time. If pressed right before the picture is snapped, the player may use an emotion as a pose for the picture. The primary function of the photo booth is to allow the player to update the photo on their ID Card, changing their clothes and emotions, which can be shared with other player's containing useful information such as their catchphrase and name as well as their badges.
If the L button is held, the picture will turn black and white. When you hold the R button, the picture is a sepia color, the player will also be able to choose an emotion if he has learned one.
While the gate is open, the photo booth icon will glow red, and so will the arrow on the machine. This indicates that the photo booth cannot be used at the current time. Once the gate is closed, the arrow and the icon will turn back to green.
The photo will be replacing the previous photo on the ID Card. You can not get the previous photo back.