Kespon ID Guard Stamp: Large. For those who want to guard against identity theft but don t like the mess of a paper shredder; the Kes pon ID Guard Stamp is for you. This stamp prints a 2-3/4x1in block of 385 characters designed to obscure addresses and other sensitive information. It uses fast-drying and waterproof permanent black ink but is not recommended for glossy paper which can smear ink. This package contains one 3-3/4x4x2in stamp with attached pad For use on non-glossy papers only.