Sorry if this might be off-topic: this may or may not involve
Java.
I need a mobile device (can be any phone or PDA) to read an RFID tag and send a message to my server (via Wi-Fi, Bluetooth or even SMS). I know Nokia has their Java-enabled NFC phones that (I think?) can act as RFID readers; other brands might have that as well.
Has anyone played with that? Is Java development needed, and if so, is it a complex project, or are there devices that will do that out of the box? I am not looking for big ticket $800 readers; something under $300.