| 摘要 |
<p>A card and a business method for sales promotion using the card as a digital data carrier are disclosed. The method comprises: picking up at least one segment content from the digital data to be sold and writing it into a hidden tag which can be read optically; combining the hidden tag with a card; reading any hidden tag by an optical reader which is connected to a player and playing it, in order to try playing the digital data of the segment. By using the simple reading method, a consumer can be acquainted with whether the product is the one he needs and wants to buy without opening the packaging.</p> |
