a stowage and center of gravity verification and assessment tool which assists users in locating items within an environment , determining the center of gravity of the environment , and calculating item location changes that facilitate altering the center of gravity . each item to be tracked within the environment is equipped with one or more remotely pollable identifiers , such as , without limitation , barcodes , or rfid or ultrasonic tags , and the system stores the mass of each item . as items are moved in the environment , the system tracks the impact of such movement on the environment &# 39 ; s center of gravity and recommends item location changes . the system can also assist users in locating items within the environment , provide access to detailed information about individual items , and assist with task scheduling .