A resist stripping apparatus is provided for cleaning a plurality of semiconductor substrates using a wafer cassette that can hold the plurality of semiconductor substrates. Access information of the network lock corresponding to the cell phone is enciphered by the corresponding enciphering key. An activated state of an antilock braking system may be used as part of the activation signal. Another method calls for the use of a plurality of moving average processes in series which calculate the moving average of the same number of signals as a single moving average process, but has a faster response time. The VCTS is modular at the crew position level; crewman modules are added or deleted as required to meet a particular training need.