The Hacker Emblem is a symbol for the hacker culture which was proposed by Eric S. Raymond in October 2003.
Raymond himself explains the symbol as:
"The Linux folks have their penguin and the BSDers their daemon. Perl's got a camel, FSF fans have their gnu and OSI's got an open-source logo. What we haven't had, historically, is an emblem that represents the entire hacker community of which all these groups are parts. This is a proposal that we adopt one — the glider pattern from the Game of Life."
The symbol can sometimes be seen as ASCII art. Examples of this include:
.o. |_|0|_| [ ][*][ ] [ ][ ] 0 1 0 ..o |_|_|0| [ ][ ][*] [ ][ ] 0 0 1 ooo |0|0|0| [*][*][*]  1 1 1