Had a look at the Invengo readers, they don&#x27;t look like they are affordable enough for hackers - please correct me if I&#x27;m wrong.  I would love to locate affordable multi-standard RFID readers.<p>I would like to see a compact, cheap RFID reader that connects over PoE (both passive and IEEE 802.11af spec).  The unit would only have to read tags and either send the reading over MQTT and&#x2F;or support HTTP - long polling or maybe even WebSockets.<p>Learning yet another in-house API, interface, etc is a stumbling block.  That&#x27;s why I prefer MQTT, it is well proven and easy to get going.  Of course, the RFID reader would need to have a web interface for setup, diagnostics.