Writing bad checks can have a number of consequences that potentially affect one's financial future. Most merchants like grocery stores, clothing shops, and restaurants report incidents of returned checks to bad check databases. Some of the most common companies collecting such data include Chexsystems, SCAN, Telecheck, and Certegy. Being listed in any of these databases can make it hard to write a check somewhere else, even if the returned check was eventually paid. Being listed in databases such as Chexsystems and Telecheck can also make it more difficult to open a banking account. Fortunately, there are a few legal ways to be able to get past bad check databases.