UPDATE: MAY 5 2015
Please note that the content in this article focuses on a legacy version of the iPerceptions code, and as such may no longer be applicable. To learn more about our Universal Code, please check out this section of our support forum, as well as this section for more information about implementing the Universal Code.
The same script can be used for your survey regardless of whether you are planning to invite your website visitors coming from desktop, tablet or mobile devices. However, if you choose to invite your website visitors on mobile or tablet devices, you would need to implement the iPerceptions script on each page within your website since the invitation methodology for tablet and mobile surveys requires this to persist the call to action throughout the entire visit.
The "Device" question in your survey (Question 1) is automatically populated by iPerceptions, and can be used to separate respondents based on their device type whenever you begin to analyze your data.