PSA/DNA Stickers

What's up boys.
Am wondering what makes the PSA/DNA stickers they put on stuff (like baseballs) "tamper-proof". Anyone know? Anyone ever pull one off to see what happens?
Am wondering what makes the PSA/DNA stickers they put on stuff (like baseballs) "tamper-proof". Anyone know? Anyone ever pull one off to see what happens?
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Carol
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lsuconnman@yahoo.com