Samsung UN46ES6100GXZE - Manual (Page 141)

optional security system that requires
devices that access the network to
transmit an encrypted security code
called an Access or Security Key. The
Security Key is based on a Pass Phrase,
typically a word or a series of letters
and numbers of a specified length
you were asked to enter when you set
up wireless security for your wireless
network.
If you use this method of setting up