I am always amazed at the lengths distribution warehouse workers will go to tamper with these vs. just not tipping the shipment. I've actually seen boxes of replacement stickers on the back of a forklift during a tour. I once had a shipment come in with TiltWatches on it and someone had slid pins through the plastic right above the balls to hold them in place. I now check for holes on these.
IF you are shipping something that really needs to be rejected if tipped, cover the stickers with a panel, shipping manifest, etc. Make sure the receiver knows to remove the covering and check before signing for the package.
Those Tip'n'tells double as great makeshift earthquake sensors. https://i.imgur.com/v83aNzV.jpg