Options:<p>1. It progresses based on content. Likely outcome: it randomly changes slides when you use a phrase too early.<p>2. It progresses based on specific command, e.g. "ok, next slide." Likely outcome: some joker in the audience will start shouting "OK NEXT SLIDE".<p>I'd stick to the remote.
It might be fun, but the remote is not that bad.<p>I have a Logitech remote that fits easily in the palm and has forward and next buttons that are easy to find by touch. It has a laser pointer too.