Meet Serenity: a smart device that attaches to your bag to make it smarter. Serenity enables your bag to automatically recognize you and deters others from moving it. It has a 100+ DB alarm and a water resistant design. The device notifies your smartphone if you are about to leave your bag behind.
To get started, open the Serenity app, add your Bluetooth devices that you would like Serenity to recognize, and the rest is easy. You can use Serenity as a portable locker, theft deterrence tool, and bag finder. More information is available in Kickstarter.