The North Texas Tollway Authority runs the toll roads around the DFW area, and they use electronic tolling equipment (no toll booths).
If you do not get a toll tag on your car, they will scan your license plate and send you a bill. If you do not pay, they add penalties, and now they have the ability to prevent you from renewing your car registration if your tolls are not paid.
They have become more aggressive in going after violators, and now they publish a list of the repeat offenders, which gets updated periodically.
Here's the list, sorted alphabetically:
https://www.ntta.org/custinfo/Habitual_Violators/Documents/HV062013_alpha_by_lastname.pdf
And showing up on the list, we have:
Dez Bryant $162
Tony Romo $1632
Deion Sanders $1035