Encoding NFC Tags
Using Your Smartphone for writing / Reading NFC Tags
The Simplist way to encode an NFC tag is to use an encoding app on an NFC enabled phone. Most recent phones in the market are NFC enabled phones, to be able to read and write (encode) NFC tags all you need to do is to turn NFC on from the setting page in your phone.
There are plenty of NFC apps available for free from the Android app store which enables you to encode a tag, the most useful one is the NFC TagWriter by NXP. This app is used to encode NFC tags by stores contacts, bookmarks, geo location, Bluetooth Handover, SMS, Mail, text messages and much more to any NFC-enabled tags as well as to items like posters, business cards, watches and much more containing NFC-enabled electronics. Once data has been stored the application allows also reading and viewing the programmed data including options to launch applications automatically based on the contained data.
NFC TagWriter by NXP is available as a free download from Google Play, click here to download.
NFC TagWriter has Advanced features like tag UID mirroring, tag interaction counter and tag protection options. Full documentation can be viewed in this PDF file.
Another useful App is the NFC TagInfo by NXP, this App is available as a free download from Google Play, click here to download. This app will allow you to extract and analyze NFC data sets (NDEF messages), display the complete tag memory as well as to identify IC types and IC manufacturer.