We went down that route. Your 'easy to install' is now drilling/cutting holes into the container. Then hope your cable does not act as a wick. Cost to install is now dramatically higher. Remember the shipping on these things is razor thin. The shipping company makes it up in volume. So if you go and add 500+ onto install they look for other solutions. The best one I saw was a giant bar code spray painted on the side of the thing and then make it up in the software back end. Low cost, easy to fix and fairly long lasting. Downside is no realtime tracking. Plus the stacking issue is a big issue.