HackCam

Want to use your iPhone as a video camera and project the real-time image to your screen? You just need a Mac, an iPhone, a cable, and HackCam. HackCam is perfect for recording and mirroring what the iPhone camera captures. Also, you are able to put your own logo on the bottom right corner.

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Here is an example about the use of HackCam:

HackCam was inspired by members of King's College London Tech Society during the preperation of HackLondon, which was the most succesful student hackathon in UK. HackLondon used the app to point the iPhone camera to presenter's laptops & devices and project the live image to the screen. That means people don't have to connect/disconnect cables repeatedly.