We have seen many usage of Twitter but this is a bit creepy. By placing your finger on a sensor, it will determine your pulse and send out a tweet to inform the world about your current feeling (based on a set of information pre-determined). Video after the break.
The video is in Japanese wording but it seems that the tweets will be based on the different pulses that was registered at that time. And this device bypass the PC by directly sending the tweet after analyzing you.
Click Here to Go to the Translated (to English) Website
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(source)