They have bar codes on them and the CEOs have bar code readers linked back to their HQ.

Thanks - I've applied under the FOI and I'm awaiting a response, but I will complain to the LAO. Much appreciated. Richard

Have you been issued with a PCN (Penalty Charge Notice) because unbeknown to you your residents parking permit had expired? Did you know that it is your fault as you agreed to Camden's terms and conditions saying it is your responsibility to renew your permit even if the permit carries no indication as to the renewal date and if you didn't receive notification from the council that it was due? Do you think this is fair? What happens if you don't have access to the internet and can't check your permit? Did you receive a 'sticker' telling you the expiry date? Do you still have the email they sent you a year ago with the expiry date on it? How do you get a parking permit if you don't agree with their terms and conditions. If this has happened to you, please let me know as I'm am trying to collate information as to how many people have been caught this way. Thank you