Autographs obtained by card manufacturers have become the most collected baseball cards in the hobby's history. This started in 1990 in baseball when Upper Deck randomly inserted autographs of Reggie Jackson into boxes. They are commonly referred to as "Certified Autographed Inserts" or "CAI's". Both the athlete's and card company's reputations are on the line if they do not personally sign these cards. This has created the most authentic autographs in existence. These cards all have some form of printed statements that the autographs are authentic, this way, no matter who owns the autograph there is no question of its authenticity. CAI's have branched out into autographs of famous actors, musicians, Presidents, and even Albert Einstein. Mostly these autographs are cut from flat items such as postcards, index cards, and plain paper. Then they are pasted onto cards. In 2001, a company called Playoff started obtaining autographs on stickers that are stuck on the cards instead of them actually signing the cards. There is strong opposition against these types of autographs because the players never even saw the cards that the stickers were affixed to.