The Treasure Tag app is available in the Windows Phone Store. Download the app to use the built-in NFC chip to automatically track your tagged items (purse, wallet, keys) and shows their locations on your phone. The app does require the Nokia Black software update. You can use 1-4 Treasure Tags at the same time. Of course, IDK if I want my phone constantly beeping at me that often – if I walk away from my purse, keys, etc.
I bet this will be more popular for girls since they can consolidate their ‘treasures’ into their purse. For guys, though, do you want to add a key fob, something as thick as a matchbook into your wallet (albeit that is small, it’s not as small as an NFC sticker or a credit card) or anything else? I don’t know that my hubby would.