Police are asking the public to help identify the so-called Waistline Bandit, who is wanted for eight robberies in Aurora and Denver, and six more in Austin, Texas.Aurora police spokesman Officer Frank Fania said authorities also suspect the bandit pulled at least one robbery in Colorado Springs.The Waistline Bandit got his name because of the way he displays his gun during the robberies.He simply walks in the business, raises his shirt and shows the gun tucked in the front of his waistline, Fania said.The robber's repeated use of a gun worries police."The frequency and the fact that he does indeed have a gun. The fact that he has it, he's showing it, he's there to do business," Fania said.Since July 4, the robber has held-up eight businesses in Denver and Aurora. He often targets electronics stores.On Wednesday night, the Waistline Bandit hit a Subway eatery and a Game Stop shop that are about 5 miles apart in less than an hour, Aurora police said.Other Aurora robberies include:-- 4:23 p.m. July 8, a Radio Shack at 17150 E. Iliff Ave. --6:33 p.m. July 9, a Docs Video at 16863 E. Iliff Ave.In Denver, the robber hit these locations between July 4 and July 9: : -- A Radio Shack at 715 S. Colorado Blvd. --A Subway at 4300 E. 8th Ave. --A Radio Shack at 5305 E. Colfax Ave. --A Hobby Lobby at 920 S. Monaco Pkwy.An employee at the Denver Radio Shack said the man appeared to be nervous. "He was like shaking. He was holding the gun. He was like shaking. So I knew he was freaked out," said the employee. "He pulled the gun out and was like hurry up. You know. Told me the lay down on the floor on my stomach and wait until he was gone," said the employee.The manager at Doc's Video told 7NEWS the employee working during the robbery feared the gunman would shoot if he didn't hand over money from the cash register. The employee has taken a leave from work, the manager said.The Aurora Police Reward Fund is offering up to $2,000 and Crime Stoppers is offering up to $2,000 for the arrest and conviction of the robber. Anyone with information about the robberies is asked to contact Aurora Police Detective Brian McClure at 303-627-3232 or Sgt. Bob Wesner at 303-627-3152.The man is also wanted in connection for several robberies in Austin, Texas. In one case he told employees at a local store, "I'm sorry to ruin your day, but i'm robbing the place."Individuals who want to remain anonymous can call Crime Stoppers at 720-913-7867.