
The list of applications and machines that can benefit from control boxes is virtually endless. The underlying list highlights the most prominent uses of control boxes today;

Water-activated adhesives are very popular for packing tape. When the adhesive is used on cardboard, the bond it creates is so strong that the tape cannot be removed without damaging the cardboard. As a result, it is the perfect tamper-evident packaging. No one can open a box sealed with water-activated tape without leaving obvious evidence. Water-based is the cheapest of all adhesives.

The control box has two main components: A specialized device that interfaces with the stop light and a sensor that detects signals from the smartphone of an approaching cyclist who has the Bike Connect app. As the cyclist rolls up to the light, the app and the sensor talk to each other, turning the light green more quickly. According to its designers, it can be put together at home with a soldering iron and $200 in parts—although that doesn’t mean that you should try to install one on a neighborhood stop light without permission and assistance from city engineers.