Patent ID: 6906436

Claim:
A system comprising: a substrate; a circuit connected to the substrate; a thin-film battery connected to the substrate and connected to the circuit, the thin-film battery for powering the circuit; and an acceleration-enabled switch connected to the substrate for electrically activating the circuit; wherein the acceleration-enabled switch is a MEMS device; wherein the acceleration-enabled switch includes: a first cantilevered-beam-closure-switch; and a second cantilevered-beam-closure-switch; wherein the first cantilevered-beam-closure-switch forms electrical contact in response to a first acceleration and the second cantilevered-beam-closure-switch forms electrical contact in response to a second acceleration, the first acceleration different than the second acceleration; wherein the circuit further comprises: a memory; and a timer, wherein the time when one of the first cantilevered-beam-closure-switch forms electrical contact in response to a first acceleration, or the time when the second cantilevered-beam-closure-switch forms electrical contact in response to a second acceleration is stored in memory.