By Jim Karpen
The iPhone now has a bulit-in tethering option — that is, using your iPhone's data connection to give your laptop computer or other device access to the Internet. But that Internet connection can only be shared with one device via a USB connection. No WiFi option. Until now. The Nexaira Business Class II is a wireless router that gets its Internet connection from your iPhone and shares it via WiFi to other devices. It's not cheap, at $189.99, and it's not as portable as the MiFi.