Basic question about NFC tags
I was thinking about picking up some NFC tags, but I have a pretty specific use in mind. I'd like to open certain apps and toggle some settings when I dock my phone in my car and then have everything go back the way it was when I undock it. Is this possible with one tag or would I need a tag to put it in "driving mode" and another to put everything back to normal? Basically, can I have certain events triggered by getting close to the tag and other events triggered when it moves away from the tag?