http://www.fastcompany.com/3056432/behold-the-grammycam
As it turned out, the most practical way to build a Grammycam was to start with GoPro action cameras as an ingredient. The cameras are powered by batteries, which means that the people responsible for them must take care to make sure that they don't run out of juice mid-ceremony.
The whole idea is possible in part because the Recording Academy,
doesn't present winners with their own actual take-home trophies on stage. The lucky recipients get their engraved Grammys—sans Grammycam—delivered later;
the ones onstage are stand-ins, and can therefore be purpose-built for the ceremony's needs.