The teleport bracelets associated with the vessel Scorpio were actually designed and created by Dorian before he had an operational teleport system. As such, the bracelets are designed with other features. They enable communication between members of the crew, and can also be used to scan objects in a very similar way to a tricorder. Dorian only crafted eight of the bracelets, all of which were stored on a rack inside the spaceship.
The teleportation system, once it was functional, did not require the bracelets to teleport a person from one teleport terminal to another -- however, the bracelets were required to transport someone to or from a location that did not have a terminal.
Teleport bracelets are derived from Blake's 7.