CHICAGO (CBS) — A 25-year-old Mount Prospect native is one of Chicago’s newest entrepreneurs.

Patrick O’Brien, a former Groupon salesman, is the founder of Ticket Scalper. He tells the WBBM Noon Business Hour it is the first mobile fan-to-fan marketplace for last-minute tickets.

“What we’re really just trying to do is replace those shady scalpers you see outside of every stadium or ballpark or event,” said O’Brien.

A mobile app links people who are selling tickets with people who are buying tickets and provides security safe-guards on both ends.

O’Brien developed the business in San Francisco, but is moving home to launch it.

“Other ticket companies that did get their start in Chicago such as Gold Coast Tickets, or Tickets Now or Vivid Seats so it is an excellent place to move your business especially for us,” said O’Brien.

Ticket Scalper gets a 15 percent cut of every ticket sold.