Search for business android device with built in barcode scanner and RFID
any suggestion ??

I think you can go for Samsung Galaxy Tab. Mostly all business facilities are available on that phone. You can go for iPhone also. Thanks.

May be you can check out "HTC ThunderBolt" . Right now, it stands up top for business use when comes to Android.

I don't know about any device with built in barcode scanner, but you can try this android app - SnyervBPrice1.0 Scanner I think it will do the work, and it is pretty easy to use

i have found list of mobiles as per your requirement http://serialio.com/products/scanner/mo ... _Faces.php

i hope it will resolve your problem

I would like to share some nice useful android business apps over here:
Android business apps

1 – Documents To Go
2 – Google Gdocs
3 – Evernote
4 – Dropbox
5 – Remote for PowerPoint
6 – Skype for Android
7 – Seesmic
8 – HulloMail
9 – TripIt
10 – WorldCard Mobile