While I was just taking about how RFID techniques and Twitter can join together to report the status of the cats (more details from "Tweeting Cat Door"), I saw this one:
watch at vimeo.com
An iPhone attached with a RFID reader that can based on physical objects embedded with RFID tags control different media playback ... (more details from "iPhone RFID: object-based media")
The truth is that everything from Walmart has RFID tag!
So, what I really need is a RFID reader and some user-friendly coding interface ...
It is a future that I can feel and we can enjoy!