New research from marketing business Tradedoubler suggests that footfall is no longer a useful measure of retail success.

It’s found that consumers are often seeing products in-store and then using their mobile phones to check for cheaper pricing elsewhere.

Retailers can only fully understand mobile shoppers when they know what device is being used, according to a report from affiliate marketing specialists Tradedoubler.

The company’s new Mobile Devices & Behaviour study, which contacted more than 2,000 smartphone users in Germany, Sweden, France and the UK, discovered that mobile shopping behaviour can closely be linked with the consumer’s chosen device and operating system.

Performance marketing network Tradedoubler has introduced a new mobile platform this week.

We asked Rob Wilson, who runs the company's UK and Ireland operations, to explain the challenges and opportunities of mobile commerce.