We'll have a replacement program. We'll notify you that your SmartTag's battery is failing, and we'll send you a new SmartTag at a discounted rate. Then you return the old one to us in a provided postage-paid envelope. We think this is the easiest for you to be able to keep tagging without interruption. We'll recycle the batteries to reduce waste, and when our tech gets even cooler via updates you'll get updated, too!