That's a great looking device, but it's a bit pricey. They need about 100 of these.
Yes, an integrated bar code scanner would be a good feature, but not crucial
I've heard about some of the phones doing some scanning with the camera, but I've also heard that it's pretty slow, and high speed is essential here.
RFID is not required.


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A tablet will give the best on-screen keyboard.

Things like a toughbook give real keyboards that are fairly easy to use.. http://www.panasonic.com/business/toughbook/ultra-mobile-rugged-toughbook-u1-ultra.asp

Do you need a bar code or RFID reader or anything built-in?