Chip and Spin
The card market in the UK is nearing completion of its "chip and PIN" initiative -- replacing mag stripe only cards with cards containing chips and moving the customer from written signatures to PIN's.
Ross Anderson, Mike Bond, and Steven Murdoch have written a white paper titled "Chip and Spin" that addresses their point of view on this migration of the UK card market to "Chip and PIN". See their Chip and Spin website for more background on this thinking.






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