Editing Blackjack (section)

====Shuffle tracking====
{{main|Shuffle tracking}}
Another advantage play technique, mainly applicable in multi-deck games, involves tracking groups of cards (also known as slugs, clumps, or packs) through the shuffle and then playing and betting according to when those cards come into play from a new shoe. Shuffle tracking requires excellent eyesight and powers of visual estimation but is harder to detect; shuffle trackers' actions are largely unrelated to the composition of the cards in the shoe.<ref>{{Cite web |title=Blackjack in Color |url=http://www.blackjackincolor.com/Shuffletracking2.htm |website=Shuffle Tracking Counts}}</ref>

[[Arnold Snyder|Arnold Snyder's]] articles in ''[[Blackjack Forum]]'' magazine brought shuffle tracking to the general public. His book, ''The Shuffle Tracker's Cookbook'', mathematically analyzed the player edge available from shuffle tracking based on the actual size of the tracked slug. [[Jerry L. Patterson]] also developed and published a shuffle-tracking method for tracking favorable clumps of cards and cutting them into play and tracking unfavorable clumps of cards and cutting them out of play.<ref>{{Cite book |last=Roberts |first=Stanley |url=https://www.worldcat.org/oclc/12568192 |title=The Gambling Times guide to blackjack |publisher=Gambling Times |year=1984 |isbn=0-89746-015-4 |editor-last=Thorp |editor-first=Edward O. |location=Hollywood |oclc=12568192}}</ref><ref>{{Cite book |last=Patterson |first=Jerry L. |url=https://www.worldcat.org/oclc/13395266 |title=Break the dealer : winning strategies for today's blackjack |date=1986 |publisher=Putnam |others=Eddie Olsen |isbn=0-399-51233-0 |location=New York, NY |page=83 |oclc=13395266}}</ref><ref>{{Cite book |last=Patterson |first=Jerry L. |url=https://www.worldcat.org/oclc/21444382 |title=Blackjack, a winner's handbook |date=1990 |publisher=Perigee Books |isbn=0-399-51598-4 |edition=Completely rev. and updated |location=New York, NY |page=51 |oclc=21444382}}</ref>