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The biggest problem when using a tack is that it pokes and hurts the hands and feet. Also, when the paper is adjusted, the paper can become crooked or bent where the words may not be clear so 2-3 tacks may have to be use.
To solve this problem, the tack is looks like a bird made of PVC material.
- The wing on the tack covers the pin to be used safely. There is less chance of stepping on the tack or getting hurt.
- The tack's wing fixes the paper once more to prevent the paper from bending or becoming crooked.
It is easy to read and there is no need for additional tacks.
Yong In University
Yong In, South Korea
Young Jo In,
Yong In University