We have already written a post about NFC and NFC tags in which we introduced the NFC technology and told you what the tags are used for.
We have already mentioned that NFC stands for Near Field Communication. In this post, we will go deeper into the concept of NFC and NFC tags and we will also look at the types of tags and their features as well.
Getting deeper into NFC Technology
NFC is basically a short range high latency wireless communication technology that is used for sharing data between 2 devices in a very short range.
NFC is faster and easier to set up when compared with Bluetooth. In Bluetooth you need to manually pair two devices but in NFC you just need to bring the two devices near to each other and this is also a reason why NFC is much more secure than Bluetooth.
All in all, we can say NFC is an advanced version of radio frequency identification or RFID that is used in smart cards and other things.
It does not need any power source or battery to work as it is powered by Electromagnetic Induction.
More things to know about NFC tags
Now we know what NFC is so we will dig deeper into NFC tags.
I have mentioned in the previous post that NFC tags are small chips that can store small amounts of data inside of them just by tapping the device from which the data is to be transferred to them.
They do not need power all the time and they can store data inside of them even when the power source is not available. They are used to store settings, bookmarks, text, numbers and much more.
The amount of storage on each NFC tag is different from one another and it largely depends on what type of NFC tag is being used.
Types of NFC tags
There are different types of NFC tags and keep in mind that the space inside the NFC tag and speed of data transfer inside and outside of the NFC tag depends on its type.
There are basically four types of NFC tags and each have different capacity and format. Let us take a look at all of them one by one.
Tag 1 Type NFC Tag: They are based on ISO14443A standard. These tags are rewriteable but the user has the control of making it totally read only. You get a capacity of 96 bytes which won’t seem big but it is perfect to store a website URL or other textual data.
Read and write speed of this type of tag is 106 kbit/s.
Tag 2 Type NFC Tag: This tag is also based on the ISO1443A standard and these are also rewriteable. They are quite similar to Type 1 but they only provide 48 bytes of storage.
Communication speed is set to 106 kbit/s.
Tag 3 Type NFC Tag: These are based on Sony FeliCa system and has a capacity of 2 KB. It also has faster read write speeds i.e. 212 kbit/s and it costs higher than the 2 mentioned above.
Tag 4 Type NFC Tag: These are based on ISO1443A and B standard and are most advanced of the ones mentioned above. They are not rewriteable and are factory configured hence letting people use it only for complex use. It can have a capacity up to 32 KB and the speeds range from 106 kbit/s and 424 kbit/s.
The price of NFC tags are supposed to be low as they are mostly used in public uses. For example they can be used in interactive posts in which people can just tap their NFC phones and get all the data on their phone instantly.
So this was a small post about NFC and NFC tags which provided details in a deeper aspect.