Denso Corp will release the Key Finder, which enables to find small objects that can be easily lost such as keys with a smartphone, in Japan April 22, 2013.
The receiver of the Key Finder is attached to a small object like a key in advance. Then, the buzzer of the receiver can be activated and its LED lamp can be turned on via Bluetooth by using a smartphone application. The receiver is equipped with a leather strap and a ring and can be used as a key ring.
The receiver can also be used to activate the buzzer and vibrator of a smartphone to locate it. Furthermore, it is possible to automatically activate the buzzer when the distance between the receiver and a smartphone exceeds a limit set with the application.
The Key Finder can be used with the iPhone 5, iPhone 4S, iPad with Retina display, iPad mini and (fifth-generation) iPod touch. Its maximum transmission range, frequency range for transmission and power consumption are 20m, 2.4GHz to 2.4835GHz and 200mA, respectively.
The receiver is powered by a button battery. And up to eight receivers can be connected to an iPhone.
The manufacturer's suggested retail price of the Key Finder is ¥3,980 (approx US$41.3, including tax). It will be sold at Denso Service Stations (there are about 700 in Japan) and other shops. The application can be downloaded from the App Store for free. Denso plans to develop an application for Android and release the Key Finder in other countries.