Bluetooth Low Energy (BLE) is a wireless technology that is designed to provide short-range communication between two devices. It is an alternative to traditional Bluetooth and is designed to consume less power, making it ideal for applications that require low power consumption. BLE operates on the same 2.4GHz frequency band as traditional Bluetooth, but it uses a different protocol and transmits data in smaller packets.

An example of BLE in action is a fitness tracker. The fitness tracker connects to a smartphone via BLE, allowing the user to track their activity and receive notifications. The data is sent in small packets which are quickly and securely transmitted over the air. The fitness tracker then uses the data to provide the user with feedback and analysis.

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