Tamper indicator for self-adjusting shipping box

A system, comprising:

• a shipping box comprising:
• a plurality of sides arranged as a rectangular solid, the sides including fixed sides and a top side, the top side including an openable cover for access to an interior of the rectangular solid, the rectangular solid having a size determined based on dimensions of at least one object placed in the interior of the rectangular solid;
• a plurality of bladders arranged on each of the sides, the bladders configured to be inflated as a cushioning mechanism for the at least one object while placed in the interior of the rectangular solid;
• a tamper mechanism comprising an indicator and a gasket, the indicator configured to removably couple to the openable cover, the gasket configured to removably couple to one of the fixed sides, the indicator and the gasket being positioned such that closing the openable cover results in the indicator coupling with the gasket;
• and
• wherein the indicator includes a first gas receptacle holding a first gas and a second gas receptacle holding a second gas, the first gas being separated from the second gas by a membrane, and wherein the gasket includes a pin configured to puncture the membrane when the tamper mechanism is in a pressurized state so that the first gas reacts with the second gas to create a third gas, the third gas having a visually distinct color, the visually distinct color being visible from an exterior of the shipping box.