Ben Rhodes-Kropf ’24 has a message from his father. In order to receive it, he’ll have to travel to Spain.

That’s because his dad left the message through Trace, an app Rhodes-Kropf and classmate Benjamin Siegel ‘24 developed throughout their junior and senior years at Milton. The location-based service combines the functions of a messaging app with the thrill of an in-person treasure hunt, allowing users to “leave a Trace” wherever they are in the world. Messages for other Trace users (or their future selves) are delivered only when the recipient is physically close to the location where the message—in video form—was recorded.

Frustrated by the passive nature of existing social media, which users can idly scroll through for hours on end, Siegel and Rhodes-Kropf set out to create a different kind of messaging service that would foster more-meaningful connections and inspire users to travel near and far.

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