In short, yes the EyeGlass Numbers can be used to order a pair of bifocal lenses, but you need to know what your NV ADD+* number is. If you are over the age of 40, the EyeQue PVT app will provide this number for you based on the age. By using that NV ADD+ value along with your EyeGlass Numbers you can order a pair of bifocal lenses.
*Please note, although the EyeQue PVT app does provide an NV ADD+ value, it does not measure for presbyopia. That value is a good starting point for your age. If you know your reading glasses value, you can use that along with your EyeGlass Numbers.