The pilot will take place on the Northern and Bakerloo platforms at Charing Cross and will take advantage of the existing wireless network currently used by TfL staff.
From November 1, commuters should be able to log on to the internet from their laptops or mobile phones in the ticket hall areas of the station.
A statement from TfL on Friday declared: 'Any passengers with a Wi-Fi enabled device such as a smartphone, laptop, netbook or tablet computer will be able to go online or check their emails while they are passing through the Tube station.'
Kulveer Ranger, the mayor of London's transport adviser, said: 'An ever growing commuter populous has been clamouring to be able to check their emails and browse the net whilst on the go.
'This trial at Charing Cross will allow them to do just that whilst on the Tube platform. This is an important step towards seeing how this could be achieved and is part of the Mayor's ambition to examine ways in which we can use technology to adapt the city's transport system to meet the needs of those using it.'
Richard Parry, strategy and commercial director for London Underground, added: 'Around 68,000 passenger journeys are made a day at Charing Cross Tube station.
'We hope that our customers will find it useful to have access to the internet while they are using the Tube station during this six-month trial.
'Live service updates will allow passengers to check the status of the Tube and other transport services while they are on the move at the station.'
Commuters though will still have to make do without mobile phone reception, with plans to implement networks underground suffering from severe delays due to the massive costs involved and the difficulties of transforming the Victorian tunnel network.
