locate keys or other objects through Lumia.

Nokia is working on a proximity sensor accessory for its Lumia phones - interestingly named, Treasure Tag - that will allow users to track things through their phones, if a new report is to be believed.

According to a report by The Verge that cites sources familiar with company's plans, Nokia will soon launch the accessory that features Bluetooth 4.0 and NFC to track items through an app on the user's phone. The device will be able to stay 'always on' and it will come with a battery that will last six months.

As per the report, users will be able to pair the Treasure Tag accessory with their Nokia Lumia Phones through NFC, and the Finnish handset-maker will bundle a loop strap to attach the device to an object, say a bunch of keys. It further adds that Nokia has developed a Treasure Tag app for Windows Phone, through which users will be able to manage the sensor and locate the device when it gets out of sight. The app will also show the location of the device on a map, integrated with Nokia's LiveSight augmented reality view. Users will also be able to track a phone that's connected to the device through a button located on the device, as it will trigger a siren on the phone if it's in range.

It's worth pointing out that the device will work with Bluetooth 4.0 and Bluetooth Low Energy standards. The forthcoming Amber update for Nokia Windows Phones is expected to bring support for Bluetooth 4.0 and for Bluetooth Low energy devices (Bluetooth Smart) to Nokia Lumia 520, Nokia Lumia 620 andNokia Lumia 720 devices. Following the update, the phones will be able to connect and work with devices such as fitness monitors like Fitbit Flex and smart watches like Pebble. The Nokia Lumia 920already supports Bluetooth 4.0.