Methods, systems, and apparatus include computer programs encoded on a computer-readable storage medium, including an electronic business card system including plural electronic business cards. Each card is a one-way dedicated presentation device for presenting information about a user to card-holder. The card is hand-held, associated with a single user, and includes a display element and a memory to store information associated with the user. Information is loaded onto the card for presentation on the display element. The card includes an electronic interface for receiving the information and commands for controlling presentation of at least a portion of the information on the display element. The card further includes a controller to control presentation of selected portions of the information based on configuration commands received via the electronic interface. A configuration element can receive configuration instructions for setting a level of detail for information presentation on a specific instantiation of the card.