![]() Many had guessed that we had used a digital currency such as Bitcoin and distributed fractions of them across the landscape. On returning to the studio participants described their interpretations of how the red and green hot spots worked, and why Unconfirmed and Confirmed numbers fluctuated. ![]() Once outside, it became relatively clear to people that the small bags of money would disappear when a participant’s location correlated with the GPS coordinates of an icon, and within moments the Unconfirmed number would increase on their screen. ![]() Without further information, participants were asked to leave the workshop studio and venture out in to the surrounding area to discover what the three icons and the numerical values would do as they approached them.īrowser screen shot (with location on) of the GeoCoins software featuring bags of coins, and red and green GPS hotspots. In the corner of the bottom left corner of the screen two numerical amounts appeared preceded by the terms: Confirmed and Unconfirmed. On the map the participant was also able to see three types of icon: small bags of money scattered across the area, red hot spots, and green hot spots. Using the Bitcoin client Electrum, we were able to associate geofences (GPS locations) with transactional functions. ‘GeoCoin’ was a mobile application run from a web browser that used location information to pinpoint the participant within a map of Nieuwmarkt area of Amsterdam. Supporting ideation and collaborative design with location-based smart contractsĪs part of the After Money project, Design Informatics developed of a piece of software called ‘GeoCoin’ that served as an introduction to what programmable currencies could offer in a technical sense, but also allow participants to test them in an urban context to support the development of their own ideas. ![]()
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