An electronic card comprises a card portion including one or more user interface elements formed on a surface thereof. The electronic card also comprises a memory configured on the card portion. The memory has retained therein at least a plurality of data strings each associated with a corresponding one of the user interface elements. The memory comprises a buffer configured therein. The electronic card also comprises a processor configured on the card portion. The processor is coupled to the memory. First data and second data corresponding to selected ones of the user interface elements are stored within the buffer upon selection of the selected user interlace elements of the card. The first and second data correspond to first and second data strings. The first and second data strings are concatenated for subsequent processing by the processor.