I made the app which is writing/reading nfc tags, but I'm not satisfied with the range of reading tags. My stuff which I'm working with is:
I searching about info in the net and for example the wiki says that "the maximum working distance is less then 20cm", great result for me would be 10cm, because my goal is to get info from tag, when they are putted in any place on the screen. Now I need to put tag on the surface of tablet where the reader is placed. I used to write my tag in NDEF format so this type with the highest priority of intent.
What can I do to make range of reading wider?
Is there any settings which can improve range? Tech-tags?
What can I do to make range of reading wider?
Build your own device, with an emphasis on extending the range.
Is there any settings which can improve range?
Not at the SDK level. I cannot rule out the possibility that there is something at the OS level, but this would require modifying the OS itself and creating a ROM mod. And I would be somewhat surprised if this would help, as I expect the range will mostly be governed by the NFC receiver hardware, not driver configuration.