TechNews

FontCode hides letters within letters

While it’s already possible to relay information via barcodes or QR codes, those codes are entirely visible when included in a document. Using Columbia University’s FontCode system, however, users can hide messages within unrelated text via virtually-invisible changes to the displayed letters. Developed by a team led by associate professor of computer science Changxi Zheng, […]

TechNews

Study finds third-hand smoke more pervasive than previously thought

A new study from researchers at Drexel University has found that third-hand smoke – chemical residue from cigarette smoke – can spread more pervasively than previously thought, even moving throughout a seemingly “smoke-free” building. But despite this compelling research, the dangers to human health still remain unclear. The research came about when a doctoral student […]