We have been manufacturing high technology products in South Korea since 1990. In 2006 we won the Global IF Award for our high technology production. We are currently manufacturing Biometric Security Systems for the residential Homes and businesses. One design will take 50 users the other 1,000 users. All functions are operated by melody guide and user can operate it easily without Users Guide. An alarm will sound if it is abnormally tried to open. It has a sut down function if too many passwords are tried. The 12 key buttons are designed to resist external shock. Permanent locking function is provided on the inide unit and provides more safety.