Researchers have devised a digital method to virtually unfold and read letters sealed with “letterlocking”, an old practice of securing letters before envelopes (William J. Broad/New York Times)

[#full_content_wordai]

The post Researchers have devised a digital method to virtually unfold and read letters sealed with “letterlocking”, an old practice of securing letters before envelopes (William J. Broad/New York Times) appeared first on NEWDAWN Blog.