I vaguely remember about not shipping flash meomry cards through the postal service since the ionizing radiation they use to destroy biological material can destroy the data. Something I haven't though of until know: many many computer peripherals has a upgradable firmware on EEPROM or flash ROM. If a SmartMedia or Compact Flash could be affected, what's the chance your firmware will be destroyed? Y'all know most ~$100 computer hardwares are a total loss when its firmware gets zapped. Non warranty repair combined with shipping easily equals or exceeds $100.