The colored printed background highlights any erasure alterations.
Coin Reactive InkĬoin-reactive ink in the waternark changes color when scratched with a coin. Security Features BoxĪll security features incorporated into the check are printed on the back. Part 229) was enacted by the Federal Reserve System to foster the transition from paper-based to image-based check processing to improve the efficiency of the nation’s payment system. The Check Clearing for the 21st Century Act (Check 21) or regulation CC (12 C.F.R. Check Security Features - Standard Check-21 Compliance
