Hi Gemma,
I have the chip and Pin car reader from iZettle and I am very happy with it. but as chanchala said, you need to be somewhere where your phone has reception. But so far it happened only once since I have it. my sales through the card machine are rising steadily and I think it definitely helps a lot because not everyone would get cash out and come back .
The app that supports the card reader is very well designed and easy to understand. You can take pictures of your products and have listings that you use or if you have unique pieces like me, you can just take a picture each time you sell anything. This well then appear on the customers receipt which they get send via email.
I hope this helps with your decision!
