Features: brand new and high quality NFC intelligent nail sticker is a high-tech for smart product. Function is very simple, as long as you have a mobile phone with NFC functionality, nails will shine. NFC intelligent nail stickers embedded for smart LED light source, the use of mobile near-field communication technology (NFC), no battery in nail stickers. In addition to mobile phones, the use of electronic device can be as effective as NFC functionality (access control, public transport card swiping machines, etc.). NFC nail stickers operation steps:Step1: Clean and trim the nails and apply a layer of transparent nail polish.Step2: Open the package and take out the NFC nail sticker, uncover the white paper on the back of the NFC nail sticker, it is recommended to stick the NFC chip on the index finger.Step3: Remove a piece of favorite nail sticker.Step4: Stick it on the chip of the nail sticker and expose the LED light.Step5: Apply another layer of transparent nail polish on the surface of the nails Most recent Android phones have NFC capabilities. Check if it's available in your phone by going into settings and look for NFC. The NFC hardware is usually located on the back of the phone. for IPhone Owners Please Read:For the for time being, only for Apple 6 has NFC, but for Apple has turned off NFC, and for Apple will be able to open the NFC function after the latest system upgrade. Specifications: Material:LED Size:Approx.0.7X1.1cm/0.28x0.43inch Color:Deep Blue Light/ Green Light/ Yellow Light Package Includes: 1 Piece Nail Sticker note: Please allow 0-1cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.