I hope this isn't a completely silly question to ask. The Missus & I are headed to the U.K. (and Paris) at the end of this month. My no-forex-fee BA Visa Card now has a "chip". Will I need to get a P.I.N. to be able to use it on this trip (I haven't needed one so far, to use it in the USA)? Your experienced guidance will be very much appreciated (as always) - thanks!