Features: Compatibility: Compatible with Switch and 3DS systems, let you enjoy the game. You can use this Ntag215 blank cards for your needs such as turn on or turn off the WiFi, join in a network, view a message and so on. Easy to use: It is easy for you to use, you just need to put the suitble mobilephone on the NFC white tag, then the data will in to your mobilephones, which is convenient and easy. You will receive a set Ntag215 blank cards for you to use, you do not need to buy them often. Small in size and easy to carry, you can take it with you to share with your friends or family.