I think it's interesting that founding forefathers of both the Jehovah's Witness and the Mormon movement seem to have had ties to the secret societies. (Freemasonry)
The relationship between The Church of Jesus Christ of Latter-day Saints and Freemasonry began early in the history of Mormonism. Some historians believe that the secret combinations , like those of the Gadianton Robbers referred to in the Book of Mormon , were symbolic for Freemasonry, although Joseph Smith Jr. never explicitly confirmed such beliefs.
While a number of early Church members such as Heber C. Kimball were Masons prior to becoming Mormons, Joseph Smith Jr. and the Church had no formal relationship with Freemasonry until the early 1840s, when Smith was urged to form a Masonic Lodge by those members who were Masons. It appears that John C. Bennett , a newcomer to the church, had a particularly strong influence in the spread of Freemasonry . LDS historian Reed Durham writes:
you can read more in Wiki (freemasonry and lds)
another thing in common seems to be that just as all good JWs carry their blood cards, the Mormons must carry their "temple cards". That is, if they can get one.
Mormons who wish to participate in any of the temple rituals must first request an interview with the bishop of their local ward (that is, the pastor of their local Mormon congregation), who will examine them individually as to their religious beliefs, their loyalty to the church leaders, their abstinence from forbidden things (alcohol, tobacco, coffee, tea), their sexual morality, and the extent of their financial contributions to the church. If the bishop determines from this examination that they are sufficiently worthy, he will issue them a "recommend," that is, a pass to the temple, valid for two years. (Until 2002 the recommend was valid for only one year.) The member must then take the recommend to the stake president (the church officer who oversees several local wards), who will conduct a similar interview before countersigning the recommend. Many Mormons always carry their recommend, which is the size of a credit card, in their purse or wallet.
http://packham.n4m.org/temples.htm