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Codes and ciphers may be the best way to encode information, but sometimes remaining unseen is the difference between getting caught and escaping. The Mossad ink pen uses advanced ink that, once heated, completely disappears. Use a blow dryer to heat the page, and the ink will be rendered invisible; place the paper in the fridge to reveal the writing again. Unlike other invisible ink pens, this advanced pen leaves no visible detection and will not reveal writing even when exposed to UV rays. Designed to require very little pressure on paper when writing, so even indentations on the paper can be avoided.
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