Businesses and consumers can sign up for the first commercial high-speed mobile internet service using third generation technology in the Republic from later today, writes Jamie Smyth, Technology Reporter

Third generation technology, known as 3G, is a new type of mobile technology that enables users to connect to the web at much higher speeds than currently possible with mobiles.

Vodafone, the State's largest mobile phone company, said yesterday that 3G was now "open for business" and consumers could sign up for new data cards that can be used in laptop computers.

The data cards use a combination of the latest 3G mobile technology and the existing second generation mobile technology already in use by mobile firms.

They will eventually replace Vodafone's current crop of second generation data cards, 5,000 of which have been sold in the Republic since March 2003.

The 3G data cards will be marketed initially to business customers who want to access their corporate networks while travelling around Ireland or abroad.

The price of the cards varies depending on the type of tariff plan but can cost up to €350. Consumers also have to pay monthly subscriptions of up to €199 before VAT to use 3G.

The cards enable people to download web pages and emails at speeds of up to 384 kilobits per second, although the speeds achieved vary a lot depending on coverage levels and the number of people on the network. The data cards are the first stage of a Statewide roll out of 3G services, which will cost Vodafone about €1 billion over several years.

Mr Paul Donovan, Vodafone Ireland chief executive, said the company fully expected to earn a return from its 3G investment before the development of new wireless technologies make 3G redundant. He said the firm would launch a consumer 3G service in the autumn.

The roll-out of 3G in Ireland and abroad has been delayed due to technical difficulties with network infrastructure and a lack of availability of handsets.

Initially tipped as the next big thing by mobile experts, firms spent more than €100 billion accumulating 3G licences across Europe. But the service so far has proved disappointing.

Meteor, the State's third biggest operator, did not buy a 3G licence. Both O2 and a new entrant, Hutchison, are considerably behind Vodafone in terms of the roll-out of their networks.