An article on optical security in the August issue of Photonics Spectra includes the work of Wigner Fellow Joseph Lukens on temporal cloaking: a technique to hide optical data streams in time, analogously to an invisibility cloak in space. The full article can be found here (requires free Photonics.com account to view): https://www.photonics.com/Article.aspx?AID=62140&PID=5&VID=141&IID=963 .