[GPSNavX]

Some have inquired whether they can use an off the shelf Bluetooth GPS with iNavX and an iPod Touch. Unfortunately the answer is no. Apple's policy on this is:

"If Your Application interfaces, communicates, or otherwise interoperates with or
controls an iPhone Accessory (as defined above) through Bluetooth or AppleÂ’s 30-pin dock
connector, then the accessory must be licensed under Apple's MFi Program."

http://developer.apple.com/iphone/program/accessories/

So as soon as Apple approved Bluetooth GPS or GPS receivers that can connect to the 30 pin dock connector are available, iNavX will support them.