John McChesney of NPR recently visited SBC Park in San Francisco and reported on the use of wireless networks as an emerging trend in public space. The San Francisco Giants have covered the ballpark in WiFi using 123 wireless hotpots. Fans can access special on-site features such as individual pitch placement and player statistics. Office workers can attend day games and still answer e-mails as if they were sitting at the office. He also conducted a test of wireless security and approached a laptop user after he had placed a purchase online.