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One card
Kim, Young suk(Korea)
One card can fill various kind of card information on single card as Electric card of digital way. One-card can reduce plastic garbage of credit cards and the paper garbage of paper receipts. Also it can dissolve environmental pollution and global warming. I tried to combine LCD display and USB with original card to emphasize various conveniences such as card information saving, selecting and exchange information with a computer.
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SHAKE toothbrush
Ryu Hakhyeon(Chosun university, Korea)
Jin Gilho(Chosun university, Korea)
By brushing your teeth, you can make electricity through piezoelectric element-used self-power generation.
We shake a toothbrush about 700 times when we brush our teeth for about 3 minutes. When we brush our teeth, kinetic energy is naturally generated and this kinetic energy is stored in the storage battery of the main body of the toothbrush. The stored electric energy operates heat rays and UV LED.
The act of brushing teeth plays the functions of sterilization and drying so bacteria can be reduced by 1/50.
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YUBARTA
Daniela Esponda Rodriguez(U.N.A.M, Mexico)
Yubarta is an ecologic buoy capable of absorbing and degrading oil residues in piers of minor cabotage using sustainable technology.

Yubarta consists of four pieces and the oleophilic textile with digesting bacteria. Is easy to assemble and to settle in the seawater. It works as a substitute of the anchor buoy, the anchorage or by simply positioning it in the contaminated area, the same way you put a normal buoy.