Hi 
I am starting with options to use RFID Tags in HomeAssistant.
Right now, I am playing around with some tags - and I just would like to know, how the RFID / NFC technology is implemented in HomeAssistant.
I already figured out, that you can “create” or better write Information to a scanned tag.
In this case, HomeAssistant does write a URL and a Tag-ID into the tag itself…
Scanning the Tag with HomeAssistant, does then tigger an automation.
But:
I also have other applications, such as my EV Charger, where I can use RFID / NFC Tags to activate the charging for example.
As far as I know, the EV Station does only scan the “Tag ID” which is the serial number of the tag.
HomeAssistant seems to generate it’s own Tag ID - since the tag ID is not the one I am getting while scanning the tag in other Applications… is that right?
Is it somehow possible, to “access” the Tag ID / Serial Number that was scanned in HomeAssistant?
This would allow me to send the Serial Number through MQTT to my ev station, without writing the Serial Number manually into the Msg.Payload