• IE interfaces
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• v.20 no.3
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• pp.327-332
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• 2007

Because the coins of about 920 billion are hoarded during these ten years, the national treasury of about 35 billion wons is wasted in minting coins every year. In this paper we promote to revitalize the circulation of coins through the connection with the financial world. Firstly embedded software that is contained in the coin banking ATM is developed. Then we developed new business process model that does customer spend coins efficiently in online through this system. The system constructed in this paper can contribute to the public interest and the marketability of the nation because of reducing waste of the national treasury and improving utilization and negotiability of coins.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 1999.05a
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• pp.131-137
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• 1999

In order to operate Internet Banking, there is a important thing to precede, That is to carry out a scheme of one-stop to let clients transact anything they want to buy and establish the preservation of public security system between existing banking networks. (of course, that should be designed handily to the clients). In this paper, the protocol which is determined between banking network and Internet to maintain the preservation of public security. In other words, each XPM(X.25 Packet Manager) is a program to manage both system security and service at each other side; manage all packets which are connected by X.25 protocol. If other condition like law and institution is improved, it will be adopted to real operation with various service. Further more, we tan construct Electronic Commerce and adopt various digital money like electronic coin or check.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.8
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• pp.695-704
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• 2020

Bitcoin and other prominent cryptocurrencies have gained much attention since the last several years. Globally known as digital coin and virtual currency, this cryptocurrency is gained and traded within the blockchain system. The blockchain technology adopted in using the cryptocurrency has raised the eyebrows within the banking sector, government, stakeholders and individual investors. The rise of the cryptocurrency within this decade since the inception of Bitcoin in 2009 has taken the market by storm. Cryptocurrency is anticipated as the future currency that might replace the current paper currency worldwide. Even though the interest has caught the attention of users, many are not aware of its opportunities, drawbacks and challenges for the future. Researches on cryptocurrencies are still lacking and still at its infancy stage. In providing substantial guide and view to the academic field and users, this paper will discuss the opportunities in the cryptocurrency such as the security of its technology, low transaction cost and high investment return. The originality of this paper is on the discussion within law and regulation, high energy consumption, possibility of crash and bubble, and attacks on network. The future undertakings of cryptocurrency and its application will be systematically reviewed in this paper.