The 20 second limit is a hard limit, and there is no opportunities to extend it. Furthermore, you may need to plan for a cooldown period between sessions as well. My recommendation would be to reconsider if NFC is the correct tool for what you are trying to do. A typical NFC transaction takes a few seconds, and even reading complex documents take no longer than approximately 10 seconds. The time limits on the sessions have been determined based on common use cases, and as the 20 seconds limit cannot be extended, and you may have to require a hardware imposed cooldown period between sessions, your users may find this process inconvenient. But in the end, it is your business to decide if using NFC despite not satisfying your requirements is something to build upon.
Topic:
App & System Services
SubTopic:
Core OS
Tags: