Radio-frequency identification (RFID) readers are the main bottleneck when building an RFID system. The cost of the readers can be high, and these devices can be bulky. Moreover, when these RFID readers have to be included in a small mobile device, the cost increases, or the system becomes more complex to put together.

中文翻译：

---

全数字RFID读取器：在FPGA芯片和/或嵌入式处理器上实现的RFID读取器

射频识别（RFID）读取器是构建RFID系统时的主要瓶颈。读取器的成本可能很高，并且这些设备可能很笨重。此外，当这些RFID阅读器必须包含在小型移动设备中时，成本会增加，或者系统变得更加复杂。