NFC key fobs are basically NFC tags in the form of a keychain and are very convenient to carry around. They can unlock the doors, pay for a coffee at a vending machine, or can be used to identify users in various other NFC applications.
There is a large supply of similar NFC key fobs on the market, and although they all look the same, there can be very big difference in the quality and their operation.
Proximity chips NTAG213
are made by the trusted chip manufacturer NXP Semiconductors and are the most popular NFC Type 2 chips. They are compatible with the ISO/IEC 14443-3A standard, and they have a preprogrammed 7-byte long unique ID number and a storage capacity of 144 bytes of data which is equal to a 136 character-long URL address.
They can be programmed with a computer and NFC encoders or regular NFC mobile phones (Android and newer iPhones). To program NFC tags with a mobile phone you can use and free applications like NFC Tools
, NXP TagWriter
, and other NFC apps.
To program NFC tags with a computer you need an NFC encoder like the ACR1252U
and a software like TagXplorer
The programmed chip can be locked with a password, and the chip cannot be preprogrammed by other unauthorized users. The data retention time for these chips is 10 years.
The NFC key fob housing have a very common tear shape, made from plastic material (ABS) measuring 40 x 32 x 4.5 mm. They contain also a ring with which it can be attached to the keys or other accessory. The NFC key fobs are available in multiple colors (blue, gray, black, green, red, orange, and yellow).
By default, they do not contain the numeration or other printed elements, but if you need the customization, please let us know and we will send you an offer.
Options for customization (for pricing please send an inquiry)
Beside the key fobs from stock, you can order customized key fobs with a housing in different color or shape, we can print on key fobs your company logo, serial number, or chip ID code.
Since the chip ID code can be read in more than 50 different ways, we take extra care that we print the code in the proper format. Many NFC devices (including NFC phones and tablets) read the chip ID in 14-digit hexadecimal number (known as 14 HEX Reverse Byte format).
Reading test for NFC Key fobs with a chip NTAG213
We tested the NTAG213 key fobs with different kinds of readers and measured the reading distances. This is not an official test, and was made to inform you what reading distances you may expect with your application.
The reading distance between the key fob and the reader is affected by many different factors, like the size of the antennas and quality of the chips, the interferences of metal, and electromagnetic signals, etc.
Technical specification for key fobs with NTAG213
Chip manufacturer: NXP Semiconductors
Standards: ISO/IEC 14443-3A (NFC Type 2).
Memory size: 144 bytes of data which is equal to a 136 character-long URL address.
Security: 7-byte long preprogrammed chip Unique ID number, ECC-based originality signature, 32-bit password protection to prevent unauthorized memory operations and Field programmable read-only locking function
Operating frequency: 13.56 MHz
Reading distance: up to 10 cm (usually up to 5 cm)
Dimensions: 40 x 32 mm
Thickness: 4.5 mm
Technical documentation for NTAG213 chips and software tools are available here:
If you need larger quantities send an email to email@example.com or call +38641 884 124 and we will be happy to help you.
If you are an integrator or reseller, we offer special discounts.