Does anybody know of any packaging which measures elapsed time from the time of opening? I have conducted a great deal of research and have found packaging which monitors exposure to temprature and changes in temprature, light, humidity, etc. but not elapsed time. Thank you.
closed as unclear what you're asking by Terry Chia, Xander, Lucas Kauffman, Adnan, Noordung Sep 2 '13 at 15:00
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