Episode: Sleuths Read Old Booby-Trapped Letters Without Opening Them
Description: People once folded their correspondence in intricate ways, known as “letterlocking,” to keep out snoops. A fancy new imaging technique sees right through it.
Learn about your ad choices: dovetail.prx.org/ad-choices
Click any word to see translations, usage examples & similar words. Then learn them using saved words.
Text not synced with the audio? See here for why certain podcasts won't sync.
