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    This study explored haptic interfaces to improve Morse code (MC) reception accuracy. A bimanual setup significantly reduced errors compared to a unimanual approach, enhancing human-computer interaction.

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    Area of Science:

    • Human-Computer Interaction
    • Haptics
    • Information Theory

    Background:

    • Morse code (MC) reception can be error-prone, especially with traditional auditory or unimanual haptic interfaces.
    • Improving the accuracy of MC reception is crucial for effective communication in various environments.

    Purpose of the Study:

    • To investigate and compare the effectiveness of different haptic interfaces for reducing errors in Morse code (MC) reception.
    • To determine if spatial discrimination in haptic feedback is superior to temporal discrimination for MC input.

    Main Methods:

    • Development and testing of multiple haptic interface prototypes for Morse code (MC) input.
    • Comparison of a bimanual haptic setup (spatial discrimination) against a unimanual setup (temporal discrimination).

    Main Results:

    • The bimanual haptic interface, utilizing left/right location to distinguish dots and dashes, significantly reduced reception errors.
    • Error rates were reduced to 56.6% compared to the unimanual setup, indicating superior performance.

    Conclusions:

    • Bimanual haptic interfaces employing spatial discrimination offer a more accurate method for Morse code (MC) reception.
    • Haptic feedback design, specifically spatial versus temporal cues, critically impacts human-computer interaction efficiency and error reduction.