I am Capt. T'Cal of Starfleet's Temporal Investigations Unit. The communicator became the cell phone and the phaser was fashioned into the Taser. These modern devices would've been delayed substantially if their Klingon precursors hadn't been reversed engineered by the CIA's Section 31 in the mid 1980s. Of course, you must tell no one about what I've just told you. Here, look at this pen in my hand and watch as I press this button....<flash>
Did you see that weather baloon??
Did you see that weather baloon??