What to do if the RFID Tag contains multiple WiFi records?

[PaulZC]

The spDevST25DV ST25DV (RFID Tag) device emits a new_WiFi_record event after one second (assuming the tag contains at least one WiFi record).
The SSID and password can be read via the ssid and password properties.
As discussed, it currently uses read-write properties, but would benefit from a read-only property.
The tag is re-checked every 15 seconds. A new event is emitted if either SSID or password has changed.

At the moment, the device will only make use of the first WiFi record it finds in the tag's memory.
If there are multiple WiFi records, the second record onwards are ignored.
Should we change this? Should we use the final record, just in case the user keeps appending new records?