So-called Wi-Fi wireless broadband technology is catching on fast with computer users and sparking a new service industry that aims to cater to an increasingly mobile Internet audience. McDonald’s already offers wireless internet access in many US restaurants, but charges a fee. E3 has been a great chance for McDonald to advertise their service.

Just at the end of last year, Nintendo has joined forces with McDonald’s to offer free wireless internet access in the US for its DS handheld games console. The service means McDonald’s customers will be able to play selected DS titles against other gamers around the globe. The access points are being supplied by US firm Wayport, which will receive an undisclosed sum from Nintendo.

Although it does not plan to install the service in all its locations, McDonald’s would be the largest potential partner for a hot spot operator in the United States. The chain is using an “at” sign (@) with an M in the middle as a logo to help hot spot subscribers identify locations that offer the service.

Wi-Fi providers have targeted a growing number of potential venues within which to establish access points, including hotels, airports, phone booths and restaurants. Coffee vendor Starbucks and deli chain Schlotsky’s have already launched commercial Wi-Fi services aimed at driving more foot traffic into their stores and keeping customers there longer, and they have reported some early signs of success.