The foremost solution for protecting your PCâ??s information and for regulating your childrenâ??s computer and internet usage in order to prevent addictive behavior. 1) Service content This is a program which is executed every time the PC is turned on. You will be able to login to your PC only when you have approved of the login request from your smartphone. In other words, this is a PC login approval service. The S2K Login Technology protects your whole computer and all of the information present from being accessed by an unauthorized individual. This technology has received a GS (Good Software) Certification by the Software Testing and Certification Laboratory. 2) Service characteristics It prohibits any access to a PC without appropriate approval It allows for the user to access their PC at times when their smartphone does not have a network connection or no battery power. It has an easy UI experience that does not require a learning process. It has the potential to be implemented with powerful encryption technology such as Public Key and also Transaction Synchronized OTP It has the potential to replace the role of ID Cards.