No, and yes. I am using NFC stickers but not the official Samsung Tectiles. They are pretty cool. I am finding the most benefit from using them in combination with Tasker. You can use them to activate Tasker tasks and profiles. You can also just program them for basic stuff.
I recommend Tagstand (
www.tagstand.com). I bought stickers from them and their customer service is EXCELLENT. Their prices are in line with everywhere else I've seen. There's a Tagstand app that you can use to program them. I think there are other apps too, I just use that one.
One tip though... I haven't had much luck with the small stickers and the S3. It seems to work better with the larger stickers. I haven't tried all the other forms - keychains, cards, etc. I assume they work well.
Lots of fun and added convenience!