How do you configure the push registry on a 6212 to auto start on a ISO14443-4 card?
I have tried with a simple tag (Mifare) and that works ok, so I changed the Push information to:
String url = "nfc:undefined_format";
String filter = "nfc:rf;type=iso4a;uid=*";

When touching a 14443A card the phone gives the message "Tag cannot be used" as if there was a bad ndef record on the card, but in fact it's completely empty. The card is ISO14443-4 and ISO7816-4 compliant; don't know if that’s the problem?

Are the phones native "tag search" overruling my push registration?