UK fingerprint 'developer' can read a letter from its envelope

(PhysOrg.com) -- UK scientists have discovered a fingerprint'“developer' which can highlight invisible prints on almost any surface – and read the text of a letter just from the envelope it was sent in.

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<p><a href="http://www.physorg.com/news145517878.html">UK fingerprint 'developer' can read a letter from its envelope</a></p> <p>(PhysOrg.com) -- UK scientists have discovered a fingerprint'“developer' which can highlight invisible prints on almost any surface – and read the text of a letter just from the envelope it was sent in.</p>