I think you mean the American Chip+PIN system, as implemented. In most other countries, a PIN is required.
I've used Chip+PIN cards since they were launched in the UK in 2004. Malfunctioning readers are very rare, and the suggested flaws don't seem to have resulted in anything.
I don't know, unless the terminal has a bad connection it usually takes less time than writing a signature, even in online mode.
> The chip readers are prone to malfunction, and I'm sure they will be cracked in due time.
The technology has been in wide use for decades in Europe. I'm pretty sure the existing chip readers aren't very prone to malfunction, unless for some reason the US is completely redeveloping everything from scratch.
Also, they haven't been cracked yet as far as I know.
What's worse is you can still do a transaction without a PIN, leaving open the opportunity of someone just stealing your card. The only fraud this really prevents right now is copied cards.
It's crazy to me the payments industry can get away with charging $500 for these card readers too. Most chip readers I've seen still have to dial up to charge a card.