How the NFC tag works with your smart android phone ?

From the previous article we already know what is NFC TAG . Today we will tell you how it works.
NFC tags are passive devices, which means that they operate without a power supply of their own and are reliant on an active device to come into range before they are activated. The trade-off here is that these devices can’t really do any processing of their own, instead they are simply used to transfer information to an active device, such as a smartphone.

1. Creating a profile tag for your workplace

Having your phone ring when you’re at work is one of modern life’s little annoyances — especially if you’re foolish enough to have a particularly embarrassing ringtone. Remembering to put your phone in silent mode before you set foot in your office should be part of your regular daily routine, but many of us forget to do so. Thankfully, NFC tags can sort this out for you — as well as handle several other settings on your phone in one fell swoop.

2. Social alerts

Perhaps you have a spouse or family member who is especially concerned with your whereabouts. Tap Add Action again, and then select Social Media from the menu. Here, you can create a task that sends a tweet to your Twitter account to confirm you’ve arrived at work safely, or you can use alternative social networks, such as Foursquare, Facebook or Google Latitude to achieve the same result.


Finally, if you’ve got a busy day at work, you may want your calendar application to open up as soon as you’re sat down at your desk, so you can see what’s in store during your working day. Select Add Action and then Launch Applications. Tap Applications and then select Calendar from the list that is shown.
Writing information to the tag
Once you’re happy with the task you’ve created, click Finish and then Save for Later. You’ll want to give the task a snappy name — ‘Work’ makes sense, but you can pick whatever you like. The next step is writing that information to a blank tag.

4. Creating a profile tag for your home

Repeat the process you followed for the work tag, but this time toggle everything backwards. So switch your ringer on, tweet that you’re home, and so on. You may wish to switch your Wi-Fi off, or alternatively you can instruct it to specifically connect to your home network. Position this tag near your door at home and you can swipe it the moment you enter your abode.

Other uses for NFC tags.

These are some applications for NFC tags. You can use them for other things such as automatically opening a web page in your phone’s browser, exchanging contact details or seamlessly enabling your phone’s portable Wi-Fi hotspot, making the process of tethering other devices that little bit easier.
There are a range of different tag types available, each offering different storage levels and transfer speeds. Tag types 1 and 2 come with capacities between just a tiny 48 bytes and 2 kilobytes of data, and can transmit that information at just 106 kbit/s. Although that may sound quite small, especially compared to your typical SD card, that’s enough data for some very simple pieces of information, such as a website URL, and is all you need for most basic NFC tags. These tags are designed to be highly cost effective, and can also be re-used if you want to change the data stored on them.Type 3 uses a different Sony Felica standard, and can transfer data at a slightly faster 212 kbit/s. These tend to be used for more complicated applications, but sadly can’t be rewritten. Similarly, type 4 is again read-only, but has a larger memory capacity of up to 32 kbytes and communication speeds of between 106 kbit/s and the maximum NFC 424 kbit/s. Tag type 4 works with both type A and B of the ISO14443 standard.

Please kindly contact for testing sample.