"Don't resist – let the mugger grab your briefcase. As he escapes, punch a code on your transmitter. Vision-clouding red smoke billows forth as ear-piercing shrieks sound." So we wrote
in June, 1983. Crime was a bigger problem in the '80s compared with today and evidently, a lot of business types were worried about having their briefcases stolen right out of their hands. Though these security devices do actually exist today, they are far from in common use. These days, if someone were running down the street with pink smoke billowing from a bag, the whole thing would likely be mistaken for a publicity stunt or student art project.