It's a very neat idea, but I don't know if I'll ever use this.
There's some sound/noise
issues, which I guess will probably become less of an issue in the future. I've found that once
spectators get the seed of idea in their head that I use technology to achieve my effects, then all
of them must be expensive technology.
Either way, it's kind of impractical to try to use
this is real life. Just use any other tried and true method.