| 摘要 |
When a wireless communications device (100) is traveling a speed exceeding a first predetermined threshold but less than a second predetermined threshold (210), the device is presumed (220) traveling in a motor vehicle. In order to inhibit operation of the wireless communication device (100) when traveling, access to certain device functions or applications such as e-mail, text messaging, etc. are limited (260) by requiring (230) the user of the device to respond (240) correctly to a randomly generated visual challenge (300,310,320), such as, for example, a CAPTCHA (300) in which a user is prompted to recognize the characters in a visually distorted string of text. This visual challenge presents a sufficient obstacle that the user will be less likely to use the wireless communications device (100) for e-mailing or texting while operating a motor vehicle.
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