A new mobile app called Click A Taxi has launched in the UK and Ireland, promising coverage across all towns and cities. It’s already available in Denmark, Sweden and Norway.

The Click A Taxi app is available for iPhone and Android devices. Customers who book via the app are located by GPS; the nearest participating taxi company is then located and the app provides regular updates on the arrival time. There’s no charge for the app and no fee for booking a journey.

Microsoft has agreed to acquire business-focussed social network provider Yammer for $1.2 billion.

Yammer will become part of the Microsoft Office Division and will continue to report to current CEO David Sacks.

Virgin Media has launched a number of new ‘pay monthly’ mobile phone tariffs today, including an unlimited data deal.

The ‘Premiere’ tariff offers unlimited data, unlimited text messaging, unlimited voice calls to UK landlines and 2,500 minutes for calling UK mobiles every month (subject to terms & conditions). It’s priced at £26 per month for a two-year minimum term, with a £5 monthly discount available for customers who already subscribe to other Virgin Media services at home.

The EU’s transport and internal market committees have adopted a report that says all new cars sold in the EU from 2015 should be able to dial the emergency services automatically when they are involved in a serious accident. This recommendation isn’t legally binding, although the European Commission is expected to announce proposed legislation later this year.

Vehicles with ‘eCall’ mobile technology would automatically call the Europe-wide emergency number 112 when a crash is detected.

Senseg, the Finnish company that enables smartphone and tablet screens to offer different textures when touched, has appointed Paul Costigan as its Chief Executive Officer.

Mr Costigan was previously the chief operating officer and Asia-Pacific region president for video processor business Movidius, although he’s probably best known as co-founder and CEO of fabless semiconductor firm Massana.