Which technology use radio waves to automatically identify people or objects which is very similar to the bar code?

The technology that uses radio waves to automatically identify people or objects, similar to barcodes, is called Radio Frequency Identification (RFID). RFID systems consist of tags containing a microchip and antenna that transmit data to a reader via radio waves. This allows for automatic identification and tracking of items without the need for line-of-sight, making it more efficient than traditional barcodes. RFID is widely used in various applications, including inventory management, access control, and supply chain logistics.