Some of those Amazon reviews suggest that the tags only work when "fresh", which... | Hacker News

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		tempestn on July 21, 2015 \| parent \| context \| favorite \| on: Spraying Magnetic Stripe Cards with Iron Filings Some of those Amazon reviews suggest that the tags only work when "fresh", which might support that theory. Still I expect confirmation bias is more likely.

TeMPOraL on July 22, 2015 [–]

The video on their page says that the tags work for up to four months, which suggests that they upped their scam even further.

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