Samsung utilizes Bluetooth Low Energy (BLE) technology so that users can use their mobile device to easily locate items with Galaxy SmartTags attached. As the user gets closer to the item, the BLE signal gets stronger and the green circle displayed on their phone grows larger. “When users are close to their devices, they can tap the ‘Ring’ icon to make their Galaxy SmartTag emit a sound that allows them to easily locate their lost item, even if it’s not immediately visible, like under a sofa or a seat,” explained Jimo Park.