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How is data stored on an NFC tag?
The data is usually stored in a particular way called NDEF (NFC data exchange format) encoding. This universal way of storing NFC information means that almost any NFC enabled device will be able to read and understand the data and what type of data it is. How much information can be stored on an NFC Tag ?
Which is better QR code or NFC tag?
Seritag’s opinion is that QR Codes and NFC tags sit alongside each other and both have their advantages and disadvantages. It’s generally considered that the user experience with NFC tags is better.
The easiest way at the moment is to use an NFC enabled mobile phone. Almost any Android NFC enabled phone can encode NFC tags and iPhones from 7 onwards running the latest iOS13 operating system can now also encode. There are a number of Apps available to do this but we usually recommend NFC Tools or NXP’s TagWriter.
How does NFC work on a mobile phone?
NFC (near field communication) is a wireless technology which allows for the transfer of data such as text or numbers between two NFC enabled devices. NFC tags, for example stickers, contain small microchips with little antennas which can store a small amount of information for transfer to another NFC device, such as a mobile phone.
Your data is stored in a small amount of non-volatile memory within the NFC chip. Non-volatile memory is memory that retains stored information when power is removed. Data for NFC tags is commonly measured in units called bytes and each byte is equivalent to approximately one character of text.
How does the size of a NFC tag affect scan distance?
It’s not so much about the tag size that affects scan distance, it’s about the antenna size. The antenna is the coil of wire within the NFC tag that creates the energy and powers the chip. In theory, the bigger the antenna, the more energy that can be harvested.
How big is the antenna for NFC tag?
If you take this to the extreme, the antenna in a phone might be the size of a small coin. An NFC tag antenna the size of a notepad with a hole in the middle is not going to be a good match up. The ability to scan has a direct effect on user experience. The ability to scan comes down to two things.
In general, Seritag very strongly advise that storing vCards on an NFC tag is a bad idea. There’s two reasons. Firstly, we think it is always best to consider NFC Tags as a link to the data rather than the data itself. In this ‘internet of things’ world, data is dynamic and changeable. Storing a vCard onto an NFC Tag is static.