Datapad

Datapads are terran handheld devices, used for sending and recieving text messages. It is capable of displaying Dominion Standard Time and its screen emits light bright enough to provide illumination. "Unauthorized user" or "error" messages are displayed if something is wrong with its system and/or user.

Trivia
The datapad is likely based off the real-world iPad. Like the iPad, datapads send text messages which, in the Project Blackstone viral campaign, are represented by actual tweets.