Smallest NFC tag The smallest NFC tag you can buy is the 14mm round NFC Laundry Tag. This disc tag includes the universally compatible Ultralight NFC chip with 46 bytes (approx 46 characters) of usable memory. Specifically design to withstand industrial laundry processes this is a very tough tag. Where a sticker tag is required we also offer the 12x19mm NTAG203 Midas and 19x19mm MiniBlock Ultralight Wet Inlay. Both these clear tags are well suited for a wide range of NFC applications. Where custom print is required we also offer the 19x19mm Standard Delivery Custom Print NFC tag including the NTAG203 NFC chip. The above sizes are the minimum dimensions that still allow for a usable scan distance. Smaller than this and an NFC reader or phone would struggle to scan the tags.

RFID is the process by which items are uniquely identified using radio waves, and NFC is a specialized subset within the family of RFID technology. Specifically, NFC is a branch of High-Frequency (HF) RFID, and both operate at the 13.56 MHz frequency. The Smallest NFC tag can be as small enough to fit between the ridges of human finger prints. That's quite small.