What defines an active RFID tag?

An active RFID tag is characterized by its reliance on an internal battery to power its operation. This design allows the tag to engage in broadcasting information autonomously, unlike passive tags that rely on an external reader to provide energy for data transmission. Active RFID tags can transmit data over greater distances compared to passive tags, making them suitable for applications where real-time tracking and monitoring are essential.

The ability to broadcast information means that active RFID tags can send signals at intervals, allowing them to function effectively in various environments, including those where passive tags may struggle due to limited range. In contrast, other choices highlight features that do not apply to active RFID tags, such as the lack of a power source or the notion of being inexpensive and short-range, which are characteristics more closely aligned with passive tags.