Not being able to access the web while on the Tube is a bugbear for many Londoners, however, new plans could change this.
Current proposals mean that they should be able to access WiFi on the platforms in time for the 2012 Olympic Games this summer.
Plans for Tube WiFi have been in place since March last year following successful trials at Charing Cross, however, there were concerns that the plans would be shelved following the abandoning of a similar project involving mobile phone signals last year.
Full details of the service, including whether people will be charged for logging on, are yet to be revealed. Many such decisions will depend on which operator wins the tender for the project.
Transport for London's Director Of Strategy and Service Development Gareth Powell said: "London Underground is continuing with preparations to install the necessary infrastructure and is on schedule to complete the project as planned. An announcement of the chosen service provider will be made in early spring leaving plenty of time for this to be delivered to customers in time for the 2012 Games."
The Charing Cross WiFi trial, which took place in November 2010 saw people being able to access the web on Tube platforms and in the ticket hall.
It was free to look up travel information however for all other browsing there was a charge.
Every effort is being made to make London the most connected city in the world ahead of the Olympics.
Earlier this month it was revealed that O2 will set up a public WiFi network which is free to use in major urban areas in Westminster and Chelsea. Once completed it will be the largest free WiFi zone in Europe.
Virgin Media is also working on WiFi for buses over the coming year.