There are many resources available, including several from Kinesis, that detail best practices for mobile surveys. Harder to find are best practice recommendations specific to mobile survey invitations; while there are actually numerous invitation options to consider, little information is available to the MR industry as to which are most effective for any given mobile research project. This is primarily because a majority of today’s mobile survey traffic comes from respondent intercept on mobile websites and ads, rather than from mobile panels. Things are starting to change however – Kinesis is seeing significant growth of mobile and multimode panels among our clients and throughout the industry – and therefore effective mobile invitation delivery is becoming a critical issue. The challenge is that there are many mobile invitation modes to consider, and determining which mode(s) to utilize can be tricky. Below Kinesis has briefly identified both the well-known and emerging mobile survey invitation options available to researchers, with some recommendations for use.
Email. Just as is the case with desktop surveys, email is a predominant survey invitation method used in mobile research, and rightfully so. Email is a very inexpensive invitation option, recipients are highly familiar and use it regularly, and delivery times can be precisely scheduled. Email remains a strong and perhaps the best option for multi-mode (web/mobile) studies in that it provides respondents with the ultimate flexibility to decide when, where and via what device they will participate.
There is also an email-to-text option that uses the built-in email address specific to each mobile phone rather than the recipient’s third-party email application, but since many mobile subscribers do not know and do not use their mobile email address, Kinesis does not generally recommend this option. While it can be useful in camera phone ethnographies and mobile diaries, today’s mobile devices are sophisticated enough to utilize the third-party email applications for these projects, and therefore this invitation mode is becoming obsolete.
SMS. SMS is a widely used mobile communication method, particularly among younger mobile subscribers, and enables the survey invitation to be sent as a text message. SMS short codes are well-suited when targeted recipients’ mobile phone numbers and email addresses are not known, and are currently the most popular option for recruiting feedback at public venues because they are fast/easy to type and automatically return the survey URL (or other content). SMS is a highly immediate option, yet it can be expensive. Per-usage fees are often required which can make implementation undesirable if the sample size is large, and may involve usage fees for the respondents themselves (although there are some new free-to-recipient SMS services emerging – the MR industry should keep watch here). Additionally, in Europe and other places where GSM network standards are used, WAP Push is available. WAP Push utilizes an encoded message which can be used to send links that open up directly in the mobile browser, and has proven to have higher completion rates than basic SMS.
MMS (Multimedia Messaging Service). MMS is like SMS but it can also send sound, images and video files in addition to basic text. Currently MMS usage is very expensive and there is not a single standard in use. Additionally, email provides much higher resolution for images, and mobile email supports other forms of media more readily, therefore Kinesis does not recommend MMS.
QR Codes. QR codes are a further option for pubic venue research where targeted recipients’ mobile phone numbers and email addresses are not available. QR code invitations are inexpensive to implement (the only required cost is signage/display printing) and ensure that surveys are accessed from the mobile device like SMS invitations. Respondents for QR code surveys are limited to those who have an installed QR code reader/scanner app on their mobile device, but QR code knowledge and usage is growing very quickly worldwide, and it will likely be a very viable invitation option moving forward. QR codes may also be used in conjunction with short codes to appeal to the broadest possible audience and increase response rates.
Location-based. Utilizing the location-tracking technology that comes standard with most smartphones, survey invitations can be triggered based on the targeted recipients’ physical location. Technologies such as geo-location, geo-fencing, Bluetooth, etc., ensure real-time invitation delivery, and can also confirmation where a survey was completed. There are limitations with this mode however; mobile users have the ability to turn off this feature, location tracking is still sometimes imprecise, and its usage may require compliance with regional privacy laws. Researchers need to be careful not to abuse or alienate respondents with location tracking until the technology becomes more mature, so therefore today it should be used with caution.
In-App Messaging. Use of smartphone in-app messaging obviously first requires that a custom mobile research app has already been developed and downloaded to the phones of the participants. For research panels where regular communication is necessary and expected, apps are a good option. Beyond the development and maintenance costs, app messaging is typically free and invitations pop up similarly to text messages.
Social Media. Several survey software tools now offer survey invitation integration with leading social media sites like Facebook and Twitter, and this is a good option for multi-mode surveys since these sites are readily accessed by both web and mobile browsers. Social media sites are a good recruitment source for brands and companies with an active and successful social media presence, however survey invitations posted to a Facebook Wall or Twitter Feed may be easily ignored, and therefore response rates may be lower than expected.
Naturally, determining which mobile invitation option(s) to use is dependent upon the type of survey being conducted, the targeted demographic groups, and also the regions in which the project will take place. Significant research-on-research will be necessary to determine industry-wide mobile survey invitation best practices, but in the meantime, hopefully this blog can shed some light on both the pros and cons of the options available for today’s mobile projects.

Earlier this year Kinesis unveiled QR code support for Kinesis Survey™ so that clients could automatically generate a 