Decode is the best for people seeking a simple, easy and private NFC experience. NXP’s app is geared to those more technical and interested in the back-end NFC encoding. Finally, Sneaker Con tailored the NFC .Ensure that wireless communication is enabled on your system. Press the POWER button on the NFC Reader. The power LED will turn on blue. If the battery power is getting low the LED will turn red. Place the Nintendo 3DS NFC Reader/Writer and the handheld system on a flat level .