Automated vCard writer (with photo)

[amal]

@anon3825968

That’s the maximum size of the NDEF (more like 868 bytes for a NTAG216 in fact, because there are bytes used by the NDEF encapsulation other reserved fields in the tag).

And also because of the capability container nonsense not making full use of the memory for NFC… it’s honestly pretty fucked up.

So what happened with the 2k memory on the xSIID?

TL;DR - The first batch of xSIID made December 2019 were formatted to try to use all 2k of memory across two 1k memory sectors for NFC applications, but the NFC stacks built into Android and iOS phones don’t know how to properly read multiple memory sectors in NFC Type 2 chips. Future batches are formatted to only use the first memory sector which is 1k for NFC applications. The remaining 1k is still readable and writable by phones, but only with a custom smartphone app that can directly address…