Sign up for an Award
Participate with your entry in one of our professional or student awards.
Sign up for an awardLearn more:
Unsupported browser
You are using an outdated browser. Please upgrade your browser to improve your experience.
Unsupported browser
You are using an outdated browser. Please upgrade your browser to improve your experience.
Keep your valuable asset more safety.
Generally, we charge some product in one's credit card.
But now days, payment plan that used four secrete numbers for large charge have will damaged valuable asset by lost credit card.
We can't use! If we don't set secrete number,which is bottom of card.
This way is the same to another people.You have little effort.
But that give you more safe.
YeungNam University
Gyeong San, South Korea
HyunYoon Choi,
YeungNam University
BoRam Kim,
YeungNam University
HyeonJoo Nam,
YeungNam University
