Abstract: An intelligent portable communications device and its operation method according to a user's schedule are provided. The operation method is formed of the steps of recording the schedule, continuously determining if it is necessary to alert the user, determining if the user has a scheduled event if alerting the user is necessary, determining if the user can be called during a scheduled event, automatically performing a response corresponding to the recorded schedule for the call if the user cannot be alerted, and alerting the user if the user can be alerted, or if the user does not have the scheduled event. Therefore, even though the user has not manipulated the portable communications device before a scheduled event, the user is not disturbed, a noise interruption can be prevented, and the caller can be led to conform to the user's schedule through the automatic response function.

Abstract: An intelligent portable communications device and its operation method according to a user's schedule are provided. The operation method is formed of the steps of recording the schedule, continuously determining if it is necessary to alert the user, determining if the user has a scheduled event if alerting the user is necessary, determining if the user can be called during a scheduled event, automatically performing a response corresponding to the recorded schedule for the call if the user cannot be alerted, and alerting the user if the user can be alerted, or if the user does not have the scheduled event. Therefore, even though the user has not manipulated the portable communications device before a scheduled event, the user is not disturbed, a noise interruption can be prevented, and the caller can be led to conform to the user's schedule through the automatic response function.

Abstract: A system and method for providing information services using a bar code at a wireless terminal, which is capable of receiving a variety of information services including user authentication through a network by receiving a bar code from a wireless terminal over the Internet and reading the transmitted bar code from a bar code system of a member store. The bar code system is constructed such that various services may be offered through a bar code system associated with a bar code issue server using a bar code transmitted to the wireless terminal through the Internet. Accordingly, the information service system and method are provided for various on line business services while not substantially modifying conventional bar code systems. Also, a bar code service can be offered through the wireless terminal, thereby allowing for excellent mobility compared with the conventional bar code system.