The good news is, if you are going to steal using the self serve tills, you could get away with it up to 20 times...
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Long, 25, stole from Sainsbury’s 20 times in three months by fooling the self-service scanner into thinking more expensive items were onions.
Long managed to save £450 using the ruse, which his own lawyer admitted to a court was ‘stupid’.
He confessed to having repeatedly conned the same Central London store, which didn’t even sell loose onions, but had them on their standardised scanners. //
Read more:
http://www.dailymail.co.uk/news/article-2439872/Ex-international-hockey-player-stole-450-Sainsburys-self-service-scam-scanning-groceries-loose-onions.html#ixzz2h