Boise BSP-11VD-GN Beware Security Paper, Hlthcare, Void, 8-1/2 X 11, Green, 250/Pack Beware Security Paper. Protect your most important business documents, legal correspondence and healthcare records from fraud and identity theft. Patent-protected AuthentiGuard is 99% effective with current scanners, copiers and fax machines. Protect your most important business documents, legal correspondence and healthcare records from fraud and identity theft. Patent-protected AuthentiGuard is 99% effective with current scanners, copiers and fax machines. Older technology is only 70% or less effective. Hidden words appear when copied, scanned or faxed.