Prosecutor Lisa Callaghan says "somebody had been watching too much CSI."
Britt pleaded guilty and was sentenced Wednesday more than six aggravated robberies during 2008.
The Fort Worth Star-Telegram reported Thursday that masked robbers shed their shoes and opted for white crew socks during some of the crimes. Nobody was hurt during the robberies that mainly targeted restaurants and retail stores.
Callaghan, who referred to the CBS television show "CSI: Crime Scene Investigation," says the shoeless aspect was the connecting factor in some cases.
She declined to provide more details on how Britt was identified, since a co-defendant awaits trial.
