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The ubiquitous adoption of the internet means that as long as internet connections are available, communication can take place independently of geographic locations. In this paper, we demonstrate how the same can hold true for physical exploration of a remote location: we present a mobile robot that can be controlled over the internet from within a browser. Our robot executes commands issued by a remote operator, but at the same time ensures its own safety by autonomously avoiding obstacles such as walls and stairs. The operator receives a video feed and the readings of other sensors from the robot. Our system is built entirely using open source software, and we have made available all source code for our system and the schematics for the LEGO Mindstorms NXT robot.