Amtrak is now using the iPhone on some routes is a mobile ticket scanner. The system also allows riders to get the ticket barcode on a smartphone.

Audio-Technica ATH-ANC9 headphones have launched canceling noise in three different levels. The headphones also have an integrated remote and microphone for use with the iPhone.

Polaroid is showing off a new Apple compatible GL 10 mobile printer concept at CTIA. The concept will work with the iPhone and other iOS devices for mobile photo printing.