Came to renew the car tax last week and the credit card is near limit.

Don't like using debit card on-line due to (perceived) lack of
protection against fraud etc. So decided to use debit card and touch
tone automated phone renewal.

Although this takes much careful input of numbers into phone, it all
went smoothly.

Got to wondering whether there are security loopholes using this method.
Clearly with on-line card detail entry there is possibility of key log
virus, scam sites, wireless sniffing (if you use wireless for financial
transactions - I don't). But are there equivalent weaknesses in these
automated phone transaction systems?

Also, does anyone know if a written acknowledgement is sent as proof of
tax status?

Thanks

Phil