SERITAG

NTAG213 or NTAG210µ ?

The NFC chip

An NFC tag contains three key components - the NFC chip, the antenna and something to hold it all together. The chip is the tiny black dot highlighted in the image below. It contains both the memory to store your data and the technology that allows the NFC communication. As you might expect, different NFC chips contain different amounts of memory. Additionally, different chips also have different features and technology.

Why Seritag offers two chips

There are a large number of NFC chips on the market from various manufacturers. However, the Seritag team have supplied tags to tens of thousands of projects and we have the experience to understand what the vast majority of customers really need. Which is why we focus on two chips - the full featured NTAG213 and the lightweight, economical NTAG210µ.

Feature comparison

 NTAG213NTAG210µ
Usable Memory144 Bytes48 Bytes
Lockable DataYesYes
UIDYesYes
UID MirrorYes-
CounterYes-
Originality SignatureYesYes
Password ProtectionYes-
Data Lifespan10 Years10 Years

Definitions

Usable Memory ▾
The amount of memory that is available for encoding. This will be less than the total memory on the chip because some memory is used for functionality.
Lockable Data ▾
The ability for the tag to be locked so that the data cannot be changed.
UID & UID Mirror ▾
A 14 character (7 Byte) Unique ID is stored in memory during manufacture and cannot be changed. It can be used to identify the tag. UID mirroring is the ability to dynamically copy the UID onto (or into) the URL/web address encoded on the tag. The mirror feature is almost never actually required as mirroring can be done dynamically while encoding anyway.
Counter ▾
An internal counter which stores how many times the tag has been scanned. It is also possible to dynamically attach the count onto (or into) the URL encoded on the tag.
Originality Signature ▾
A bit like a fingerprint, it's an advanced feature which allows the authenticy of the tag to be checked. It's complex to use and requires substantial specialist knowledge.
Password Protection ▾
A relatively simple mechanism to protect the contents of the tag using a short passphrase. Requires the use of an App (not iPhone).
Data Lifespan ▾
All NTAG series chips have a technical 10 year data lifespan. The technology behind the NTAG213 and NTAG210micro is identical.

Which chip to choose

In our experience, a tiny fraction of projects use any of the NFC chip features that set the NTAG213 and NTAG210µ apart. In reality, the choice is therefore more about memory requirements and product suitability. The scan performance of the chips is identical.

To keep things simple, if :

  • you are planning to only store a web link or just use the tag's UID
  • your link will fit on an NTAG210µ (use the memory calculator below)
  • you can use a 22mm tag
then go for a 22mm NTAG210µ. Otherwise, go for an NTAG213 tag.

Memory calculator

To help you assess your possible NFC memory requirements, you can use this memory calculator. Simply enter your web link and the calculator will automatically calculate the memory used. We do not store or record any data entered here.

NTAG210µ
NTAG213
Memory Used : 8 Bytes

Tag management software

If you find that your URL is too long to fit onto your preferred tag, then you might want to consider using our Ixkio NFC tag management software. Ixkio will shorten your links down to fit on either the NTAG210µ or NTAG213 and also provide full flexibility to manage and change destination links. NFC tags purchased through Seritag do not count towards Ixkio tag slot allowances so in many cases it can be cheaper to use Ixkio and NTAG210µ chips than NTAG213.

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