def str_to_bin(data_string):
    """Returns the binary representation of a string

    Uses unicode (or ASCII) representation of the string values

    args:
        data_string (str): Incoming string in unicode/ASCII format

    return args:
        binary_data (str): Binary representation of the string
    """
    unicode_points = [ord(char) for char in data_string]
    binary_values = ['{0:08b}'.format(point) for point in unicode_points]
    return ''.join(binary_values)