We tested Android Device Manager by Google

Basically, Android Device Manager allows you to locate, ring the phone and erase all your data (if you previously allowed it).

The new Google Service launched yesterday and it is working very well. Our first try was not that successulf as it failed to rang our Nexus 7 tablet but it worked flawlessly with our XiaoMi Mi 2S phone.
A few hours later, everything is working like a charm.
Our first critic concerns the localization feature. It works now accurately on our Nexus 7 without enabling the GPS but only approximatively on our Mi 2S without enabling the GPS first. Somehow, Google finds a way to use the GPS chip on the Nexus 7 (and maybe others Nexus devices) but uses only 2G/3G network (and maybe Wi-Fi) to locate your non Nexus device.

To activate the erasing function, you need to allow it. Just ask Google (on the device manager page) to send your the notification to guide to the right option to enable.
If you choose to erase your device (in case, you lost it), it'll take just a few minutes.

The service is linked to your gmail account (you need to log in first) and detect all the devices linked to it. It is much needed feature since all the major manufacturers are already offering it (XiaoMi, Apple, HTC, Samsung at least).