Boycott, Disinvestment and Sanctions are a peaceful response to Israel’s continued illegal occupation, repression and brutal military operations against the Palestinians. Useful links can be found on the Boycott Israel site.
Another useful site for those interested in Boycotting Israeli Goods can be found at: http://www.bigcampaign.org/
…and if anyone really wants to know more about how bar codes work then here is a good place to start… http://en.wikipedia.org/wiki/GS1
Caution: If you are an US individual or organisation then boycotting Israeli goods is illegal! (US Department of Commerce). I guess its further proof that organisations like these are highly effective.