This Cobra Tag 2-Way Separation Alarm for Smartphones, Tablets and Laptops drops from the list price of $59.99 to $8.99 at Groupon Goods. Shipping adds $2.99. This is the best deal we could find for this device locator by $30. Using Bluetooth, the Cobra Tag sets up an separation alarm between your smartphone and linked item that will alert you if the item is left behind. It also maps when you lost your belonging on a free Android and Blackberry app. Sales tax is charged in most states.