Most helpful critical review
80 of 91 people found the following review helpful
Doesn't work. Why 2 Stars instead of 1? Well it might eventualy change colour at Turtle Lethal Range of 15krad
on November 22, 2012
Irradiated it with a directional Co-60 beam with a dose equivalent of 200 rads. The sticker was stuck to my wallet so I just placed the wallet at the target zone, walked behind a shield and opened the pig. Sent about 200 rads of equivalent radiation onto the target area. No percivable change in sticker color after 1 day after exposure (I gave it time to adjust).
However, it appears that some of my credit cards in my wallet that were behind the sticker have been wipped. Since the machines can't read the magnetic strip even through the "Plastic Bag around the strip" trick.
Since the sticker doesn't have a "Fit" gauge there is no way of knowing if it hasn't been thermally compromised but even then it should have changed colour. And no it's been in my wallet so no UV exposure (once again if it was exposed to UV it would have changed color...believe me I know from many scary experiences of what not to do with those things and where not to leave them).