No. For ultrasonic measurement, the BarScreenSensor’s probe must be in direct contact with the smooth surface of the object, with ultrasonic gel (included) acting as a medium.
Devices such as the GoldScreenSensor or the magnetic scale are better suited for measuring through thin packaging and blister packs. Coins and bars weighing up to approximately 2 ounces can be tested with the GoldScreenSensor. With the magnetic scale, the limit is even up to 250 g.