Good question.
From my understanding, Teletrack considers themselves "the" credit bureau for sub-prime lending. Their customers are primarily (according to the teletrack.com website):
"Teletrack customers supply the information in our database. Teletrack customers include payday advance businesses, rent-to-own merchants, furniture stores who offer financing, auto finance companies, sub-prime consumer finance merchants, sub-prime mortgage businesses, sub-prime credit card issuers and cable/telecom companies"
I didn't realize that within minutes of a bankruptcy being filed, Teletrack already has the public record and will report it to your creditors (if they are a Teletrack company). I know it's public record, but that almost feels like an invasion of privacy. And I didn't see anything on their site about servicing banks and credit unions.
Chexsystems is a different computer modeling program/ database. It's owned by Deluxe check printing company, and it keeps track of overdrafts, nsf, etc on bank accts for reporting institutions. When I was looking up info on Chexsystems a few weeks ago, I read that about 80% of financial institutions use Chexsystems reports as a basis for opening, or not opening, new accts. Oh yeah, Chexsystems is also SCAN, which is kind of like
telecheck, used in approving checks at time of purchase, based on your account history.
(website is chexhelp.com)