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.
Damn, I know it’s out of your hands with it being their guts to the chips and new partnership, but its a shame in this day and age that some people still consider a blue LED to be ‘fancier’ than a red or amber.
Great work on bringing these to market in a safe way!
just out of curiosity, is there a difference in brightness/light size between this and the xLED?
additionally, do they operate in the same way as a xLED and a xNT would if implanted next to each other?
Brightness is somewhat dimmer… but not by much. It’s a function of having to share power with the NFC chip off the same inductor (antenna). Coincidentally the brightness follows the pricing… green is the brightest while amber is the dimmest, yet amber is still clearly visible under lighter skin.
Yes you can have an xLED next to an xSIID (with approx 5mm between for safety).
If you had an LED in parallel with the chip on the inductor then this would be the likely outcome, but the NTAG I2C chip has a power conditioner circuit ahead of the transponder circuit and this is where the energy harvesting output comes from, so the LED gets power first.
Sorry… brain is tired and messages are coming in fast with new announcement… basically you’re correct… the chip itself gets slightly less range due to the LED on board… but it’s a minimal depreciation.
To further clarify, the performance of the LED and chip together in the NTAG I2C is a better outcome than an LED in parallel with an NFC chip with no power conditioning… but again since we’re dealing with tiny implantables the % delta results in very small physical differences. The differences are much more pronounced with a full size ISO card antenna… like this;
Omg i been waiting for something with a light that does more than just lights up. You said it was coming and well here it is. I will be ordering as soon as i get back in town. I need to figure out location now.