Second-hand Goods Shoppers told to Leave Thumbprints at Stores in New Police Scheme http://www.dailymail.co.uk/news/article-1264287/Second-hand-goods-shoppers-forced-leave-thumbprints-stores-new-police-scheme.html

Customers are being asked to leave a thumbprint when trading in second-hand goods for cash in order to stop criminals making money out of stolen items. A number of second-hand stores in Norwich have agreed to take part in the scheme, launched by local police.A police spokeswoman said the prints would help detectives trace sellers if goods turned out to be stolen.