I remember 3 scenes from a movie which is in the style of Leslie Nielsen's spy-agent comedies.
Beginning of the movie - He thinks someone is watching him while he walks down the street. He stops, (probably leans down to fix his shoelaces) and then uses the gadget - a small nail-mirror inside of his thumb.
He is asking someone to get on the roof of the building where the conversation will be more secure. 4 helicopters then take off and produce noise (and wind) and as it proves unpractical and deadly - he/or someone else suggests something different.
They get into some hi-tech chamber (almost like small submarine) which mutes all voices and sounds - but - instead of voice, they can see the words and letters they say. And in comedy style - one of them eats some of those letters.
Does anyone remember the title of this movie? It is from the 80-90s, maybe 2000's.