Free WiFi service in Taipei

My friend worked in Taipei for the past three years. He told me that free WiFi is accessible all over the city, including the mass transit trains, while on the move. It is a seamless operation, moving from one WiFi hotspot to another. This seemed to be way ahead of Wireless@Sg. I like to ask for confirmation from other people who have used WiFi in Taipei. Is this a correct description?