Abstract: A service providing apparatus includes the following elements. A communication unit communicates with an external terminal apparatus. An operation unit is used by a user for performing an operation. A notification unit notifies a user of information. A login controller receives a login request of a user from the operation unit or from an external terminal apparatus via the communication unit, and determines whether to permit the login. Upon receipt of a login request from a second user when a first user has already logged in, the login controller notifies the first user of occurrence of the login request via the communication unit or the notification unit, and permits the login of the second user in accordance with a notification received from the first user via the communication unit or an operation performed by the first user with the operation unit.

Abstract: An image forming apparatus includes an image data memory, a transmitting unit, a receiving unit, an edit information converting unit, and an image editing unit. The image data memory stores image data. The transmitting unit transmits related image data related to the image data to an external terminal apparatus. The receiving unit receives first edit information from the external terminal apparatus, the first edit information representing details of edit that has been performed on the related image data. The edit information converting unit converts the first edit information to generate second edit information, the second edit information representing details of edit that is to be performed on the image data. The image editing unit edits the image data by using the second edit information.

Abstract: A service providing apparatus includes the following elements. A communication unit communicates with an external terminal apparatus. An operation unit is used by a user for performing an operation. A notification unit notifies a user of information. A login controller receives a login request of a user from the operation unit or from an external terminal apparatus via the communication unit, and determines whether to permit the login. Upon receipt of a login request from a second user when a first user has already logged in, the login controller notifies the first user of occurrence of the login request via the communication unit or the notification unit, and permits the login of the second user in accordance with a notification received from the first user via the communication unit or an operation performed by the first user with the operation unit.