The technology for allowing you to pay for things like car parking, rail tickets and petrol, by simply inserting your card into the machine, was introduced shortly before 'chip and pin' came into use. Most of the older (non-chip-&-pin') machines have now been upgraded to require a PIN but some still exist. (Those in the Grays Shopping Centre Multi-StoreyCar Park, where I spent a day counting vehicles last week, are still of the older type but signs are displayed on them stating that 'chip & pin' is on its way).
If you travel abroad you'll still find lots of non-chip-&-pin machines used for things like purchasing bus tickets.
Chris