Transporter credit
From Memory Alpha, the free Star Trek reference.
Transporter credits are a rationed unit of exchange that allows for use of transporters on Earth in the 24th century. They are used at Starfleet Academy. It is not known if they are used elsewhere on Earth.
In his early days at Starfleet Academy, future Captain Benjamin Sisko beamed back to his home in New Orleans so frequently that he quickly used up an entire month's credits. (DS9: "Explorers")
- The exact nature of transporter credits and the New World Economy remains largely unknown.
