When I saw the presence of BCM2079x, I remembered that this reader doesn’t read MIFARE tags, which the NXP solution does, since it is an NXP tag format. Instead Broadcom only reads tags which adhere to the standard NFC Forum tag types. Ordinarily this isn’t much of a problem, as long as users are aware of the limitation and to stay away from MIFARE classic tags on an incompatible reader. What’s interesting here is that Samsung’s TecTiles were themselves originally MIFARE Classic 1k tags, which makes them not compatible with the new SGS4. I then confirmed that the SGS4 does in fact not read my existing TecTiles which I’ve setup around the house.
I reached out to Samsung, who issued a statement about TecTile compatibility on the SGS4 by announcing TecTile 2, which ostensibly carries a different tag inside compatible with the SGS4.
"Samsung is introducing TecTile 2, an update to the original TecTile NFC programmable tags, which will be available in the coming weeks. TecTile 2 will use the current NFC technology on the market, allowing Samsung customers to further incorporate NFC into their daily lives and to use with the latest Samsung Mobile products and services, including the Galaxy S 4. As industry standards continue to evolve, Samsung remains committed to meeting those standards and adapting its technologies if necessary. Samsung customers can also fully utilize TecTiles 2 with existing Samsung Mobile NFC-enabled Android smartphones currently in market."