ezVille’s home automation and intercom are linked with home security to provide home control service and with guard office / lobby entrance to provide various services. Touch keys on the main phone are arranged on the right and are grouped in simple line to increase accuracy of operation. Touch keys on the sub phone are arranged on the bottom for the simplicity. Moreover, direct lighting and touch system for icons allow users to notice functional changes easily. Overall design was kept simple to blend in with various interior conditions while users can experience visual and functional factors that they have never experienced from other products.