Open detection for packages using multiple sensor orientation comparison

A method for detecting an opening of a package, the method comprising:

• at each of at least three sensors mounted to three different respective surfaces of the package, wherein each pair of the three different surfaces are not co-planar, measuring an orientation of each of the three different surfaces onto which the at least three respective sensors are mounted, wherein at least one of the sensors is mounted to an adjustable surface intended to open the package;
• executing an open package test comprising:
• determining a relative orientation in three dimensions between the at least one of the sensors mounted to the adjustable surface and different respective ones of the at least three sensors mounted to the three different respective surfaces, and
• determining the package is open if the relative orientation changes from a threshold range indicating a closed state to a threshold range indicating an open state;
• and
• wirelessly transmitting an indication of the determination that the package is open.

A non-transitory computer-readable storage medium comprising instructions that when executed cause one or more processors to:

• measure an orientation of a surface onto which a sensor is mounted for each of at least three sensors mounted to three different respective surfaces of the package, wherein each pair of the three different surfaces are not co-planar, wherein at least one of the sensors is mounted to an adjustable surface intended to open the package;
• execute an open package test comprising:
• determining a relative orientation in three dimensions between the at least one of the sensors mounted to the adjustable surface and different respective ones of the at least three sensors mounted to the three different respective surfaces, and
• determining the package is open if the relative orientation changes from a threshold range indicating a closed state to a threshold range indicating an open state;
• and
• wirelessly transmit an indication of the determination that the package is open.