On a romantic visit to the place where you first met your love, your phone bleeps. You take it from your pocket and hold it in the air to see a virtual bubble hovering in front of your eyes. It pops, revealing a photograph from that first date years ago. “Happy anniversary,” says the message that accompanies it.
Digital messages such as this can be scattered around the physical world following the launch of an app that lets people leave virtual gifts for one another. The free app, Traces, could be used to create a virtual treasure hunt, or even alert your partner to pick up milk as they walk past a shop.
Traces allows the sender to virtually place a message, photograph, audio recording