The visitor book was invented to help companies keep a record of who is coming to their offices for meetings or other work and it was designed for safety but more importantly so that a site knows the contact details of every person who comes past the front reception an into their office or site.
Visitor Books started in the era of the printed page and are usually in duplicate so the visitor can wear a badge that identifies them as a visitor and your site has a record of who has visited. The most well known brand of visitor book is Kalamazoo. When you start to customise printed visitor books with site specific requirements you’ll find the cost can be quite expensive. That’s one area where electronic visitor management can not only save companies money, but give them much more powerful visitor management features.