When you check out we use industry-standard Secure Sockets Layer (SSL), a protocol developed by Netscape for transmitting private documents via the Internet. SSL works by using a private key to encrypt data that's transferred over the SSL connection. All modern web browsers support SSL, and many Web sites use the protocol to obtain confidential user information, such as credit card numbers. By convention, URLs that require an SSL connection start with https://www.robertachiarella.com instead of http://www.robertachiarella.com.
If you click on the "check out" button in the shopping cart you start using a secure SSL connection for your confidential information.