The past few days have been a good time for launches. Twitter has floated on the stock exchange, Kazam has revealed its smartphone range and EE has created a tariff with a million gigabytes of mobile data.

On the other side of the coin, Acer's CEO is quitting, Vodafone UK has missed its 3G coverage target and hackers can take control of your handset's camera to ascertain PIN codes.

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.

The latest company to buy the 51Degrees.mobi device detection service is mobile web specialist Netbiscuits.

There are now over 1.3 million websites using 51Degrees.mobi to provide mobile and tablet visitors with a tailored experience.

Mark Bridge writes:

The future of mobile technology is inextricably linked with video… or is it the other way round?

Some of the answers will be discussed next week at a seminar being run by the Digital TV Group (DTG), which is the industry association for digital television in the UK.

Ericsson has published the latest edition of its Mobility Report, which shows that the total number of mobile subscriptions worldwide is forecast to reach 9.3 billion by 2019.

More than 60% of these connections - 5.6 billion of them - are expected to be smartphones.