He founded Detour with another former Groupon exec Yishai Lerner. Mason says that the idea for the v

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For example, a group of people will be able to sync the same tour over multiple mobile devices by way of Bluetooth. The GPS integration will eliminate the need for someone to select a different recording for different locations  the app will do this automatically.
The plan is also to offer more detailed and personalized guided tours from people who are experts on a certain area or who actually live there, including celebrities. For example, the San Francisco tour will feature Grateful Dead lyricist John Perry Barlow talking about his favorite restaurants and radio host Ninna Gaensler-Debs describing the North Beach and Chinatown neighborhoods.
Detour is currently producing its own tours, but expects to allow third parties to eventually create content for the service. Also, after the beta testing is complete in San Francisco, Mason expects to add a new location to the service at the rate of about one per week.
He founded Detour with another former Groupon exec Yishai Lerner. Mason says that the idea for the venture came when he and his wife took an audio guided walking tour of Rome in which they needed to share a pair of earphones connected to the same device.