This card is compatible with NFC capable phones and tablets, it is Smart Card Tags.
You can do many tasks use this tag, such as set an alarm, turn phone to silent etc.
If you don’t know how to use it,please search YouTube to see.
There are many free applications on internet, so you can program very easy.
Frequency: 13.56 MHz
1K byte EEPROM memory (768 FREE BYTES availability)
Read Range: 0 – 50 mm
Size: 40mm x 32mm x 4mm
Material: ABS, Waterproof
Organized in 16 sector with 4 blocks of 16 bytes each (one block consists of 16 byte)
Write endurance 100,000 cycle
Warning: There are some known issues with the following phones:
Nexus 10 Tablet;
Nokia Lumia 610;