Electronic cards include a package having vertical and horizontal dimensions of a standard credit card, and including first and second opposing faces. A flat panel display extends over the first face. A dynamic magnetic encoder is provided on the second face. A user input device also is provided on the package. A processor is provided in the package that is configured to display a substantially full size image of a credit card on the flat panel display, and to control the dynamic magnetic encoder to provide magnetic stripe information for the credit card, in response to user selection of the credit card via the user input device. Accordingly, the look (image) of a credit card can be emulated, as well as the magnetic stripe information that would be provided by the credit card, in response to user selection of the credit card.