Note: The following Specifications and Recommendations made by Office Practicum are based solely on what has worked for our clients.
You should have a small, tethered 480 dpi Internet camera with a TWAIN interface.
There are many camera options available and 'cheap' cameras can last a long time if they are taken care of - prices can range but we recommend spending around $50.
Dell has cameras available in this price range.
Note: Webcams will work in OP