Trac-b Exchange currently has 6 harm reduction vending machines in Las Vegas. These vending machines are the first and only of their kind in the United States. Anyone 18+ with some form of ID can come into Trac-B Exchange (6114 West Charleston Blvd, 89146) and sign up for a vending machine card, online or at our storefront: HOW IT WORKS: Participants will have their own unique card/pin number. Once the card is swiped or punched in clients can receive the following; syringes, Naloxone (injectable and nasal), pregnancy tests, safe sex kits, hygiene kits, first-aid kits, and sharps containers. All items in the vending machine are free.