A device senses a mechanical shock to a component, such as a tape cartridge, and provides indication thereof to a reader mechanism upon inquiry by the reader mechanism. The device, secured to the component, includes a sensing structure which reacts to a shock event. The device also includes a transmission...http://www.google.fr/patents/US5949342?utm_source=gb-gplus-shareBrevet US5949342 - Shock sensing and reporting device
