Now updated with new and exclusive security features! Deluxe High Security Checks are the most secure checks available and trusted by 7,000 financial institutions nationwide. Anti-copy technology:Deluxe High Security checks are made with technology to prevent most copiers from creating a usable copy. Safety Hologram:Multi-dimensional foil seal hot stamped to check stock cannot be photocopied. Visible security features:Heat-sensitive ink, visible embedded fibers, chemical-wash detection area and true watermark.