iBeacons use Bluetooth signals to allow devices to detect their proximity to transmitters and trigger actions like notifications. They are being used in places like stores and airports to send promotions to customers. While they provide benefits like convenience, there are also privacy concerns since they can track locations and behavior. Attitudes toward iBeacons vary, as some see the potential for improvements while others view them as invasive if they abuse data sharing. Whether the technology progresses in a positive or negative way depends on how providers implement it.