The matter energy transporter. Classic sci-fi trope. But what does it really do?

[Source: Ivandrei Pretorius, on Pexels](Ivandrei Pretorius, on Pexels)

The popup on his screen told him that it was almost time. David closed the alert and turned his attention to the office window. When he had quit his job as a nameless drone in a big skyscraper to start his own firm, he had …