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Innovation

5 secrets hidden in Google's tribute to the first drive-in theater

2. Google leetspeak

Every movie ticket has a serial number, and if Google had its way, every movie ticket would have the numbers “600613” on it. This little nod uses “leetspeak,” a computer geek code that replaces letters with numbers that look similar.

6 for G.

0 for O.

1 for L.

3 for E.

So, 600613 becomes Google. Subliminal advertising strikes again.