Last Updated. 11/13/2025
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Hello, I am Taejeong Yoo, an IT professional ready to change the world.
There were many challenges due to COVID-19.
As the virus is highly contagious, contact with people decreased, and healthcare institutions that required contact faced more difficulties.
The government conducted epidemiological investigations using QR codes, handwritten records, and 080 toll-free calls, but all these methods had issues. QR codes had recognition problems due to camera angles and light reflection, handwritten records posed a risk of personal information leakage, and 080 toll-free calls wasted 0.8 won per call in tax money.
Seeing this, I developed an access control service using NFC and succeeded in the first mock test.
The expected benefits included preventing more than 30 times the tax waste, protecting personal information, and resolving recognition issues related to angles.
Whenever there is an inconvenience, I strive to be a professional who can solve it with creative and innovative solutions.