...I recall all those faxed-over drivers licenses that Prosper said they couldn't read. Could be wrong, but I've assumed Prosper had a lousy fax machine. Or I could be right. 
Driver's licenses are difficult to fax. They have all that copy protection stuff on them these days. Here's what you gotta do:
1. Use copier to enlarge the driver's license.
2. Put enlarged copy in the fax machine.
3. Be sure to press "fine" or "superfine" button on fax machine, to specify increased resolution.
If you make a 1:1 copy of a modern driver's license, and then fax in the default 100 scan lines per inch mode, the person at the receiving end usually can't read it.