Role Design, Prototyping, Arduino Programming Team Jianing Li, Yujing Luo Academic WorkYear 2011
Because of eyesight and memory problem, it’s hard for some senior citizens to recognize the keyhole on the door and remember to lock it. This project develops an easy-to-install accessory for the existing keyholes on doors. By mounting “Keyhole In-Light”, users will be able to find the keyhole more conveniently in dark with the LED ring around the keyhole. LED ring blink when the key needs to be turned and stop blinking when the door is successfully locked. 
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