Communication between man and doggie is normally achieved via hand signals and the doggie’s routine style of barking, but a long period of time of training and being together is necessary.
Today’s “Barking Translator” that comes from Japan can let us quickly understand a doggie's mind. With a sensor attached to the neck of a dog, the barking can be transmitted from the wireless sensor to a hand held control, and the audio frequency be deciphered by this gadget. But of course, whether or not this stuff really works still needs the convincing scientific proof, otherwise it is just a gadget to fool people.