PixelGeeks uses secure SSL technology on all checkout, account and login pages, when you see a padlock in you browser it means the connection is secure, when checking out look in your browsers address bar you should see something like this - https://web102.secure-secure.co.uk/pixelgeeks.co.uk/index.php/checkout/onepage/ note the https:// which stands for "Hypertext Transfer Protocol Secure"

Wikipedia says:
"Hypertext Transfer Protocol Secure (HTTPS) is a combination of the Hypertext Transfer Protocol (HTTP) with SSL/TLS protocol to provide encrypted communication and secure identification of a network web server. HTTPS connections are often used for payment transactions on the World Wide Web and for sensitive transactions in corporate information systems."