How electric car drivers are being overcharged | Letters

As a relatively new owner of a Nissan Leaf, I support entirely the need for adequate provision of charge points (Letters, 29 November). The ecotricity charging points at motorway services are great, even if they are now not free. But you can now only pay using a mobile phone app – not much use for my wife whose phone is too old to run the app, and not much use for anyone if their phone is lost or broken. What is wrong with a swipe card, as offered by Charge your Car at other charging point