Si-Ho Cha

Learn More
A smartphone is a mobile phone built on a mobile operating system, with more advanced computing capability and connectivity than a feature phone. The mobile operating systems (OS) used by modern smartphones are too diverse such as Google's Android, Apple's iOS, Microsoft's Windows Phone, and so on. Such operating systems can be installed on many different(More)
—Radio-frequency identification (RFID) readers are powered RF devices that communicate with tags (whether mobile or fixed) and read necessary information to be processed. A mobile RFID tag is detected by an RFID antenna. In a mobile RFID where the RFID tag is attached to a mobile object such as a vehicle, a human, or an animal, information is more difficult(More)