Mark Bridge writes:

Contactless payments. They're catching on, aren't they?

But mobile contactless payments haven't proved so popular.

The GSMA reported that 85,000 visitors attended Mobile World Congress this year, breaking all previous records for the show.

Andrew Skinner, Relationship Director of the Technology, Media & Telecoms team at Barclays, reflects on his time in Barcelona and some of the key themes to come out of this year’s show.

Mark Bridge writes:

Mobile phones have been hitting the mainstream news over the past few days. There was Channel 4’s report about data on second-hand phones not being properly deleted before the handsets were re-sold, there was the latest round of the Smart UK Project and there was Tim Muffett’s story about the mobile-enabled high street on BBC Breakfast this morning.

Analyst firm Ovum has published its mobile payment and mobile advertising predictions for this year.

Ovum expects continued technology and service innovation, notably around location-based applications, in the mobile payments space in 2014. However, there will be increasing complexity within the mobile payments ecosystem this year, and on-going challenges around the business model for digital wallet services.

Rachel McCormack writes:

Mobile point of sale transactions (mPOS) are growing in popularity as mobile use takes over from desktop computers. The description of ‘mobile’ point of sale transactions denotes the ability of a payment to be taken via smartphone or tablet rather than a traditional card reader. There are many different ways to do this; mobile chip & PIN, mobile swipe & sign and NFC payments. All of these methods vary in popularity and security conceptions and many are difficult to understand. In this article we will explore each and give you the chance to understand the technology and issues surrounding the various methods.