This is how you surprise a friend away from home.
Traces has been featured by Apple and got 5 stars reviews by Wired, New Scientist,
GigaOm and CNET. This is how they liked Traces
"This is an absolutely cracking idea"
"It's as if the messages have been etched on the air."
"Geolocation meets messaging meets augmented reality meets tech brains everywhere exploding."
"Leave digital surprises in real-life locations"