No, not a simulator, but a transmitter. There's a real person on the other end of the wire (presumably a girl) sending the kiss, which is in turn replicated by the mouth piece built by researchers at Kajimoto Laboratory. They explained:
"This device is for communications within the mouth, in other words, the goal is to obtain the feeling of kissing."
"If you take one device in your mouth and turn it with your tongue, the other device turns in the same way. If you turn it back the other way, then your partner's turns back the same way, so your partner's device turns whichever way your own device turns."
"It is achieved only by motor rotations, and you control the rotation positions via PC. It is called a bilateral control, and the turn angle information is sent reciprocally by both devices to maintain the same position. Right now the values are handled by one PC, but if a system is put together to handle the values over a network, then it would be easy for this operation to be conducted remotely."
Link via Geekologie | Photo: DigiInfo