OKEY / OKEY

When people are leaving home, they alway worry about whether the door is locked or not . If our key can tell us the door is locked or unlocked. We don't need to worry about the properties in our house. So we design the "okey". By using special physical construction, "okey"can indicate the condition of the door from a little hole. If the door is locked, the little hole will become green. If the door is unlocked , the little hole will become red. The"okey" is made by self-luminous material which can help people to find it in the dark easily.