| 摘要 |
A playing card (1) provided with identification code (a-f) which is arranged along opposed long sides of the card and mutually symmetrically. Each code (a-f) comprises at least six code fields of essentially equal size that occupy a significant area of the rim area of the respective edges of the card (1). According to a preferred embodiment, the codes are provided in that the surface of the entire playing card is reflective of ultraviolet light, where the surface has been de-masked to define the code fields (a-f). |
