Google Checkout Merchant Help

If you're a Checkout merchant with a mobile-friendly site, buyers can complete purchases from you using Checkout for mobile, regardless of the integration method you've chosen.

As always, Checkout for mobile sales must adhere to the standard Google Checkout content policies.

In general, mobile-friendly sites should load quickly for low-bandwidth mobile connections. Mobile-friendly websites are also written in the following markup languages:

• XHTML (WAP 2.0)
• cHTML
• PDA-compliant HTML
• WML (WAP 1.x)

To verify your site's markup language in Internet Explorer:

1. Open a new browser window and enter your mobile web address. If you see a pop-up that asks you to download a file with 'wml' in the title, your site is written in WML.
2. If you don't see a pop-up window, access your site in the browser, then right-click anywhere on the main page. Click 'View Source' to review the source code. If the source code starts with '

To verify your site's markup language in Firefox:

1. Open a new browser window and enter your mobile web address. If you see a pop-up window that says 'You have chosen to open xxxxx which is a: ___.wml,' your site is written in WML.
2. If you don't see a pop-up window, access your site in the browser, then right-click anywhere on the main page. Select 'View Page Source' to review the source code. If the source code starts with '

   Your site may automatically detect the compatible markup language for a user's mobile device. Sites able to detect markup languages will automatically serve the correct version of your site.

   For more information about making a mobile-friendly version of your website, review the Google Checkout Developer's Forum discussion on mobile website development.

If you're selling to mobile users, please use mobile Google Checkout buttons, as these buttons are specifically formatted to render clearly on both high-end and low-end devices.

If you have a single, mobile-friendly website supporting all phones, use a button for low-end devices to ensure all phones can render the button. However, if you offer a website interface that changes based on the device viewing your site, you may use a high-end device button when targeting high-end devices.

In general, a high-end mobile device offers more sophisticated capabilities, including a full-featured browser, large screen size, and high resolution. A low-end mobile device is more basic, with a smaller screen and a more limited browser.

You can identify high-end and low-end mobile devices by looking at the user-agent, which, in most cases, contains the name of the device accessing your website. From the device name, you can determine whether the device is high-end or low-end.

The Google Checkout for mobile purchase flow is similar to the online purchase flow. However, Checkout for mobile buyers must create and use a PIN number to provide an additional level of security for their mobile purchases. Once they've completed a purchase, buyers can view their 'Purchase History' from their mobile device. They'll also be able to retrieve their downloads from the 'Purchase History' at any time.

However, buyers who would like to contact you must sign in and email you from their Google Checkout accounts online, not from their mobile devices.

As a Checkout merchant, you're eligible to display badges on mobile AdWords ads. Learn more about mobile AdWords ads.