Scent Received, With a Tap of a SmartphoneThe New York Times

Back when people communicated more often through physical letters, there was a strong market for perfumed stationery. One sniff, it is said, could bring a rush of memories or longings.

Now communication is digital and instant. You can watch videos and hear voices of your loved ones. But smell? Not so much.

There are some signs that could be changing. Product developers are preparing to offer a variety of items to consumers that will allow scent to become a part of digital messaging.