The xSIID is a next generation NFC compliant implant which leverages the SIID, an innovative OEM module design from Dsruptive. The module houses both an NTAG I2C NFC chip and an LED indicator tied to the energy harvesting pins of the NTAG I2C. This design ensures the LED does not interfere with operation of the NFC chip and always receives filtered power output regardless of field variance. The xSIID comes in a variety of colors and offers the 2kB version (1912 user bytes) of the NTAG I2C chip!
At the moment there is a problem writing NDEF data to the xSIID. The NTAG I2C chip used in the SIID module has 2kB of memory, split into two large memory sectors. The problem is that the NTAG I2C chip is not commonly used by consumers, and at the moment there are no apps available that properly identify and write to the entire user memory. Smaller data sets which remain within the 1kB range (the first memory sector) tend to succeed, however larger data which must extend into the second memory sector will fail. We are working with NXP now to fix bugs in their TagWriter application to ensure at least TagWriter will be able to properly write data to all 2kB user memory. Other options such as NFC Tools also exhibit bugs and other issues attempting to write data, particularly large NDEF records.