Abstract: Systems and methods for sending and receiving ads from a server to a client device are disclosed. The ads can be sent based on the location of the client device and/or a designated time window. An ad manager on the client device can display, store and manage the received ads and activated additional applications based on the content of the ad.

Abstract: A system and method for sending and receiving emergency announcements from a server to a client device are disclosed. The announcements can be sent based on the location of the client device and/or a designated time window. An announcement manager on the client device can display, store and manage the received announcements and activate additional applications based on the content of the emergency announcement.

Abstract: Described are methods and mechanisms for entering data using a limited keyboard. Very generally stated, the invention envisions a mechanism and method for entering data on a keypad having a limited number of buttons. Each of several characters is mapped to a two-button pairing on the input device. A first button represents a group of characters, and a second button represents a position within that group of the desired character.