Now updated: NEW and EXCLUSIVE security features! Deluxe High Security Checks are the most secure checks available: 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.