Any scanner will work, as long as it can decipher Code 39. The majority of scanners available have the ability to read Code 39. If you already have scanners in your possession, check the owners manual for instructions on how to enable Code 39. If you are searching for a new product to purchase, make sure the barcode symbology supported includes Code 39.
You do not need a scanner in order to use Collector. The barcodes that the scanners capture, translate into RMA numbers. The RMA number can be typed into the search bar in lieu of using a scanner.