Chipolo is a Bluetooth item finder for iPhone and Android which started on Kickstarter. I backed the project on 8th November 2013 and it got successfully funded on the 16th November 2013 after raising US$293,014 out of the initial goal of only US$15,000.
My pledge level is US$99 (S$127) and shipping is free. I received the item on the 29th January 2014 via DHL Express!
You have to pair your Protag with an Android phone (no iOS support yet) and place your Protag in your belongings (like in your bag or wallet).