There are as many as 50,000 retail locations contributing data, helping to create a database containing millions of unique Ids.

Each contributing office updates their portion of the database instantly as they enter new checks or post payments. The shared database is updated every night with all of the new checks and payments from all offices.

The database is growing constantly as each office adds new retailers as clients. The retailers that contribute are usually those with the highest volumes of returned checks. Most are grocery stores, convenience stores, fast food restaurants, liquor stores, etc. This helps create a dense, effective database.