| 摘要 |
An authentication device 80 has electrical connections 100, 110 to a device indicator 120. The device indicator 120 is formed from an electrochromic material which is caused to change colour and/or to reveal an underlying image in dependence upon communication with software that the device 80 is to authenticate. In use, a device reader/writer 70 is connected to a computer 20 into the memory of which is loaded a video game or the like. Before the video game is startable, a user is required to authenticate that game by inserting a valid authentication device 80 into the device reader/writer. Once authenticated, the game may start. Completion of various levels of the video game may allow the device reader/writer to cause, in turn, signals to be sent to the electrochromic material so as to alter its state. |
