What is Google Checkout?

September 14, 2007 · Filed Under Payment service providers 

Google Checkout is an online payment processing service provided by Google aimed at simplifying the process of paying for online purchases. Users store their credit or debit card and shipping information in their Google Account, so that they can purchase at participating stores at the click of a button. Google Checkout also offers fraud protection, as well a unified page for tracking purchases and their status.

Google Checkout is free for merchants until December 31, 2007. After that date Google charges merchants 2.0% plus $0.20 per transaction (1.5% + £0.15 for UK merchants). Also after this date, merchants who have an Adwords account will not be charged fees on monthly transactions totaling less than ten times their monthly Adwords expenditure.

Prior to launch there had been early speculation that Google was building a product to compete with PayPal. However, the scope of Google Checkout is very limited compared to the PayPal offering. Google Checkout processes payments without storing value, and cannot be used to make payments from person to person.

eBay (which owns PayPal) raised some controversy when it added Google Checkout to its banned payment methods list, thus preventing eBay users from using Google Checkout.

Google Checkout service was first made available in the United States on June 28, 2006. The service later became available in the UK on April 13, 2007.

Signup Google Checkout here (you must have a Google account prior to signup)

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Comments

43 Responses to “What is Google Checkout?”

  1. vinamaso on September 14th, 2007 11:31 am

    Hi All,
    It seems that Google Checkout is too new to everyone. Who has any experience about this payment method.
    I just found that it is very easy to apply, not so strict like PayPal.
    Can anyone tell me if Google Checkout is suitable to a online seller?

  2. David Tran on September 14th, 2007 11:41 am

    you can of course!
    If you owner a website, you can integrate with Google checkout.
    Google checkout Provides three different types of integration methods
    * Buy Now Buttons (Provided by Google Checkout)
    * Valid e-Commerce Partners
    * Google Checkout API (Code Integration with Google Checkout)

    1) Buy Now Buttons

    If you do not require the shopping card functionality, you can simply integrate with Google Checkout using the Google checkout Buy Now buttons. You can have these buttons be displayed next to the products you are selling by just adding the Google checkout’s HTML code to your website. Visitors/Buyers who click this button will be automatically directed to the secure Google Checkout page where they can complete their purchase.

    Integration requirements: You have a working knowledge of your website’s HTML

    2)e-Commerce Partners

    If your shopping card application is being provided by one of the Google checkout’s partners, you can simply integrate your shopping cart and order processing functionalities with Google Checkout.

    Integration requirements: You have a shopping cart provided by an valid e-commerce partner.

    3)Google Checkout API

    Integrating our website which has shopping cart and order processing system via the Google Checkout API (Sample Codes) is a simple process.
    The Google Checkout API is available in the following Codes:

    1. ASP (Active Server Pages)
    2. .Net (Visual Studio .Net)
    3. PHP (Hypertext Preprocessor)
    4. Java 1.5
    5. Java 1.4

    Integrating with Google checkout by using the Google Checkout API with PHP can be seen in the Sample Code. You can download the Sample code provided by the Google Checkout API (PHP) from here » PHP Sample Code

    **Before going to use the Sample code provided by Google checkout you need to check the following configuration settings are available in your PHP server.

    1) PHP Version- PHP v4.3.0 or later (But Not greater or equal to PHP 5.0, because Current Google checkout API codes supports only the Lower versions of PHP 5.0).

    2)CURL - libcurl v7.9.0 or later libcurl is an implementation of CURL (PHP supports libcurl, that allows you to connect and communicate to many different types of servers by using different protocols. libcurl currently supports the http, https, ftp, gopher, telnet, dict, file, and ldap protocols), which allows you to send XML over HTTPS using server-to-server HTTP POST requests.

    3)libxml-2.4.14 or later. libxml installs a DOM XML library (This Dom XML library is used to parse and construct the XML Messages).

    Some Important PHP Library Files provided by the Google Checkout

    * GlobalAPIFunctions.php - This library contains functions that are used to communicate with multiple Google Checkout APIs.
    Some Important Functions are

    1. GetMerchantID - The GetMerchantID function returns your Google Checkout merchant ID ( You can get this Merchant ID by Registering as a Merchant with the Google Checkout).
    2. GetMerchantKey - The GetMerchantKey function returns your Google Checkout merchant key ( You can get this Merchant key by Registering as a Merchant with the Google Checkout)
    3. CalcHmacSha1 -The CalcHmacSha1 function uses a checkout shopping cart XML file, which contains information about an order, and your merchant key to compute a cryptographically secure HMAC-SHA1 value
    4. SendRequest - The SendRequest function verifies that you have provided values for all of the parameters needed to send a Google Checkout or Order Processing API request.

    * ResponseHandlerAPIFunctions.php - This library contains functions that handle synchronous responses that Google Checkout sends in response to your API requests. Some Important Functions are

    1. ProcessXmlData - The ProcessXmlData function creates a DOM object representation of the XML document received from Google Checkout
    2. ProcessRequestReceivedResponse - The ProcessRequestReceivedResponse function receives a synchronous Google Checkout response to an API request originating from your site.
    3. ProcessErrorResponse - The ProcessErrorResponse function receives a synchronous Google Checkout response to an API request originating from your site.

    * CheckoutAPIFunctions.php - This library contains functions for systematically building XML documents that can be included in Google Checkout Checkout API requests Some Important Functions are

    1. CreateItem - The CreateItem function constructs the XML for a single in a shopping cart(Here we have to list our each products as a item) .
    2. CreateShoppingCart - The CreateShoppingCart function constructs the XML for the element in a Checkout API request.
    3. CreateCheckoutShoppingCart - The CreateCheckoutShoppingCart function returns the XML structure, which contains all of the items and checkout-related information for an order.

  3. Using Google Checkout to collect donations. : PaymentTalk.Info on June 2nd, 2008 3:15 pm

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