Good idea , especially for someone who needs this routinely for professional reasons it might be worth buying cheap hardware . I ' d like to add two things : 1 ) " disable wifiproduct physically " is often nigh impossible . I ' d suggest to use a cable , so you never need to connect to a wifi networkproduct ( then the device never contains its password ) , or perhaps even remove the wifi chipproduct ( often fairly easy ) . And 2 ) I ' d overwrite the stick or sd cardproduct after use , not terminate processes or reboot .